feat: allow section-based Surrogate-Key to purge chunks

[JacobCoffee]

Description

• Sets up ability to purge surogate keys
  https://www.fastly.com/documentation/guides/full-site-delivery/purging/working-with-surrogate-keys/

When working with release changes lately we've needed to purge all releases because cache is wonky with stale CSS.

fastly ui and api doesnt seem to let me just do "root path, also purge all children" but maybe im missing it and we dont need this

Had to do something like this (which notably still missing pages like /downloads/android/ and others..):

Details

while read url; do
  [ -n "$url" ] && curl -s -X PURGE "https://www.python.org$url" -H "Fastly-Key: $FASTLY_API_KEY" &
done < "releases.txt"
wait
echo "Done - purged $(wc -l < "releases.sh") URLs"

against releases.txt:

/downloads/release/python-2716/
/downloads/release/python-230/
/downloads/release/pymanager-252/
/downloads/release/python-3141/
/downloads/release/python-2714/
/downloads/release/python-2717/
/downloads/release/python-2712/
/downloads/release/python-2711rc1/
/downloads/release/python-278/
/downloads/release/python-2711/
/downloads/release/python-2717rc1/
/downloads/release/python-2710/
/downloads/release/python-241/
/downloads/release/python-245/
/downloads/release/python-240/
/downloads/release/python-244/
/downloads/release/python-243/
/downloads/release/python-242/
/downloads/release/pymanager-250/
/downloads/release/python-2713rc1/
/downloads/release/python-3150a3/
/downloads/release/python-2718rc1/
/downloads/release/python-262/
/downloads/release/python-2718/
/downloads/release/python-279rc1/
/downloads/release/python-263/
/downloads/release/python-264/
/downloads/release/python-265/
/downloads/release/python-266/
/downloads/release/python-268/
/downloads/release/python-269/
/downloads/release/python-3137/
/downloads/release/python-246/
/downloads/release/python-250/
/downloads/release/python-251/
/downloads/release/python-3135/
/downloads/release/python-3100b2/
/downloads/release/python-3100b1/
/downloads/release/python-233/
/downloads/release/python-232/
/downloads/release/python-231/
/downloads/release/python-2715/
/downloads/release/python-275/
/downloads/release/python-276/
/downloads/release/python-277/
/downloads/release/python-277rc1/
/downloads/release/python-260/
/downloads/release/python-261/
/downloads/release/python-267/
/downloads/release/python-279/
/downloads/release/python-2712rc1/
/downloads/release/python-2714rc1/
/downloads/release/python-223/
/downloads/release/python-201/
/downloads/release/python-237/
/downloads/release/python-252/
/downloads/release/python-253/
/downloads/release/python-254/
/downloads/release/python-272/
/downloads/release/python-273/
/downloads/release/python-274/
/downloads/release/python-255/
/downloads/release/python-270/
/downloads/release/python-271/
/downloads/release/python-337rc1/
/downloads/release/python-335-rc1/
/downloads/release/python-3120a2/
/downloads/release/python-335rc1/
/downloads/release/python-2715rc1/
/downloads/release/python-2710rc1/
/downloads/release/python-222/
/downloads/release/python-221/
/downloads/release/python-3820/
/downloads/release/python-2716rc1/
/downloads/release/python-2713/
/downloads/release/pymanager-250b13/
/downloads/release/python-3140a2/
/downloads/release/python-314/
/downloads/release/python-322/
/downloads/release/python-213/
/downloads/release/python-220/
/downloads/release/python-235/
/downloads/release/python-31311/
/downloads/release/python-234/
/downloads/release/python-344/
/downloads/release/python-236/
/downloads/release/python-3142/
/downloads/release/python-3140rc3/
/downloads/release/python-256/
/downloads/release/python-3140b3/
/downloads/release/python-3140rc2/
/downloads/release/python-399/
/downloads/release/python-3130b1/
/downloads/release/python-31211/
/downloads/release/pymanager-251/
/downloads/release/python-3612/
/downloads/release/python-3134/
/downloads/release/pymanager-250b14/
/downloads/release/python-3130b2/
/downloads/release/python-384/
/downloads/release/python-396/
/downloads/release/python-380b1/
/downloads/release/python-31210/
/downloads/release/python-3920/
/downloads/release/python-3130a5/
/downloads/release/pymanager-250b10/
/downloads/release/pymanager-250b9/
/downloads/release/python-3911/
/downloads/release/python-31016/
/downloads/release/python-3140a3/
/downloads/release/python-350b2/
/downloads/release/python-3136/
/downloads/release/python-3128/
/downloads/release/python-383/
/downloads/release/pymanager-250b15/
/downloads/release/python-3130a2/
/downloads/release/python-351/
/downloads/release/python-3140/
/downloads/release/pymanager-250b12/
/downloads/release/python-3140b1/
/downloads/release/python-3130/
/downloads/release/python-3100a1/
/downloads/release/python-3812/
/downloads/release/python-3915/
/downloads/release/python-3913/
/downloads/release/python-3121/
/downloads/release/python-3140b2/
/downloads/release/python-3131/
/downloads/release/python-3613/
/downloads/release/python-3132/
/downloads/release/python-3118/
/downloads/release/python-353/
/downloads/release/python-3102/
/downloads/release/python-3117/
/downloads/release/python-352rc1/
/downloads/release/python-368rc1/
/downloads/release/python-3140b4/
/downloads/release/python-3138/
/downloads/release/python-31019/
/downloads/release/python-3810/
/downloads/release/python-370/
/downloads/release/python-360/
/downloads/release/python-362rc2/
/downloads/release/python-31012/
/downloads/release/python-3130a1/
/downloads/release/python-3110rc1/
/downloads/release/python-3120a5/
/downloads/release/python-3100a6/
/downloads/release/python-378/
/downloads/release/python-348rc1/
/downloads/release/python-3108/
/downloads/release/python-378rc1/
/downloads/release/python-377/
/downloads/release/python-3130b3/
/downloads/release/python-350a2/
/downloads/release/python-3130rc3/
/downloads/release/python-390b1/
/downloads/release/python-380b4/
/downloads/release/python-358rc2/
/downloads/release/python-3133/
/downloads/release/python-377rc1/
/downloads/release/python-368/
/downloads/release/python-3104/
/downloads/release/python-360a3/
/downloads/release/python-3150a1/
/downloads/release/pymanager-250b11/
/downloads/release/python-350a1/
/downloads/release/python-31114/
/downloads/release/python-31011/
/downloads/release/python-3110a7/
/downloads/release/python-3120b3/
/downloads/release/python-388rc1/
/downloads/release/python-3120a7/
/downloads/release/python-3110rc2/
/downloads/release/pymanager-251b1/
/downloads/release/python-3116/
/downloads/release/python-390a3/
/downloads/release/python-360b1/
/downloads/release/python-3110b2/
/downloads/release/python-373/
/downloads/release/python-370b1/
/downloads/release/python-3714/
/downloads/release/python-3124/
/downloads/release/python-360a1/
/downloads/release/python-3410/
/downloads/release/pymanager-251b2/
/downloads/release/python-3814/
/downloads/release/python-346rc1/
/downloads/release/python-3130b4/
/downloads/release/python-312/
/downloads/release/python-3100b3/
/downloads/release/python-365rc1/
/downloads/release/python-3100rc2/
/downloads/release/python-3100/
/downloads/release/python-370a2/
/downloads/release/python-3615/
/downloads/release/python-345/
/downloads/release/python-3120a1/
/downloads/release/python-341rc1/
/downloads/release/python-351rc1/
/downloads/release/python-31212/
/downloads/release/python-3109/
/downloads/release/python-3130rc1/
/downloads/release/python-3100rc1/
/downloads/release/python-3120rc3/
/downloads/release/python-350rc2/
/downloads/release/python-3914/
/downloads/release/python-310/
/downloads/release/python-3110a1/
/downloads/release/python-3126/
/downloads/release/python-3924/
/downloads/release/python-3140a1/
/downloads/release/python-3110a2/
/downloads/release/python-31310/
/downloads/release/python-360a4/
/downloads/release/python-3119/
/downloads/release/python-379/
/downloads/release/python-3919/
/downloads/release/python-3120a3/
/downloads/release/python-342/
/downloads/release/python-3110a3/
/downloads/release/python-346/
/downloads/release/python-3110a4/
/downloads/release/python-388/
/downloads/release/python-3139/
/downloads/release/python-350b3/
/downloads/release/python-356rc1/
/downloads/release/python-3100a5/
/downloads/release/python-3816/
/downloads/release/python-3130rc2/
/downloads/release/python-3112/
/downloads/release/python-360rc2/
/downloads/release/python-366/
/downloads/release/python-335rc2/
/downloads/release/python-3510/
/downloads/release/python-3105/
/downloads/release/python-358/
/downloads/release/python-372rc1/
/downloads/release/python-371rc2/
/downloads/release/python-343/
/downloads/release/python-355/
/downloads/release/python-350b1/
/downloads/release/python-3129/
/downloads/release/python-324/
/downloads/release/python-390b4/
/downloads/release/python-3130a4/
/downloads/release/python-370a3/
/downloads/release/python-321/
/downloads/release/python-347rc1/
/downloads/release/python-3103/
/downloads/release/python-391/
/downloads/release/python-340rc3/
/downloads/release/python-397/
/downloads/release/python-325/
/downloads/release/python-360b4/
/downloads/release/python-31110/
/downloads/release/python-31113/
/downloads/release/python-3110b4/
/downloads/release/python-313/
/downloads/release/python-311/
/downloads/release/python-367rc2/
/downloads/release/python-337/
/downloads/release/python-370b5/
/downloads/release/python-343rc1/
/downloads/release/python-3819/
/downloads/release/python-3710/
/downloads/release/python-350rc3/
/downloads/release/python-380a1/
/downloads/release/python-360a2/
/downloads/release/python-370a4/
/downloads/release/python-382/
/downloads/release/python-376/
/downloads/release/python-352/
/downloads/release/python-3713/
/downloads/release/python-354rc1/
/downloads/release/python-3110b1/
/downloads/release/python-390rc2/
/downloads/release/python-3610rc1/
/downloads/release/python-3716/
/downloads/release/python-31112/
/downloads/release/python-392/
/downloads/release/python-390b5/
/downloads/release/python-3912/
/downloads/release/python-362/
/downloads/release/python-31013/
/downloads/release/python-350b4/
/downloads/release/python-336rc1/
/downloads/release/python-387rc1/
/downloads/release/python-31017/
/downloads/release/python-3125/
/downloads/release/python-390a6/
/downloads/release/python-370b2/
/downloads/release/python-3100a4/
/downloads/release/python-365/
/downloads/release/python-3107/
/downloads/release/python-335/
/downloads/release/python-3110b5/
/downloads/release/python-3614/
/downloads/release/python-390a4/
/downloads/release/python-301/
/downloads/release/python-390rc1/
/downloads/release/python-395/
/downloads/release/python-3120a6/
/downloads/release/python-3610/
/downloads/release/python-370rc1/
/downloads/release/python-331/
/downloads/release/python-3925/
/downloads/release/python-3120rc2/
/downloads/release/python-3101/
/downloads/release/python-361/
/downloads/release/python-372/
/downloads/release/python-3110a5/
/downloads/release/python-394/
/downloads/release/python-336/
/downloads/release/python-3813/
/downloads/release/python-3122/
/downloads/release/python-3120b4/
/downloads/release/python-358rc1/
/downloads/release/python-382rc1/
/downloads/release/python-320/
/downloads/release/python-380rc1/
/downloads/release/python-374/
/downloads/release/python-3715/
/downloads/release/python-371rc1/
/downloads/release/python-381rc1/
/downloads/release/python-359/
/downloads/release/python-384rc1/
/downloads/release/python-3130a6/
/downloads/release/python-381/
/downloads/release/python-380b3/
/downloads/release/python-354/
/downloads/release/python-392rc1/
/downloads/release/python-364/
/downloads/release/python-326/
/downloads/release/python-333/
/downloads/release/python-390a5/
/downloads/release/python-364rc1/
/downloads/release/python-3110b3/
/downloads/release/python-363rc1/
/downloads/release/python-361rc1/
/downloads/release/python-386/
/downloads/release/python-3110a6/
/downloads/release/python-362rc1/
/downloads/release/python-3115/
/downloads/release/python-332/
/downloads/release/python-3100b4/
/downloads/release/python-31010/
/downloads/release/python-371/
/downloads/release/python-375/
/downloads/release/python-3140a6/
/downloads/release/python-380a3/
/downloads/release/python-3811/
/downloads/release/python-380b2/
/downloads/release/python-369rc1/
/downloads/release/python-3717/
/downloads/release/python-342rc1/
/downloads/release/python-349/
/downloads/release/python-380/
/downloads/release/python-3711/
/downloads/release/python-380a4/
/downloads/release/python-31015/
/downloads/release/python-369/
/downloads/release/python-383rc1/
/downloads/release/python-391rc1/
/downloads/release/python-3120/
/downloads/release/python-3140rc1/
/downloads/release/python-3916/
/downloads/release/python-3510rc1/
/downloads/release/python-3120b1/
/downloads/release/python-344rc1/
/downloads/release/python-360rc1/
/downloads/release/python-31014/
/downloads/release/python-370a1/
/downloads/release/python-353rc1/
/downloads/release/python-3922/
/downloads/release/python-3817/
/downloads/release/python-347/
/downloads/release/python-3917/
/downloads/release/python-3130a3/
/downloads/release/python-385/
/downloads/release/python-360b3/
/downloads/release/python-355rc1/
/downloads/release/python-389/
/downloads/release/python-3120rc1/
/downloads/release/python-3100a2/
/downloads/release/python-3815/
/downloads/release/python-390a2/
/downloads/release/python-367rc1/
/downloads/release/python-360b2/
/downloads/release/python-315/
/downloads/release/python-3114/
/downloads/release/python-382rc2/
/downloads/release/python-3918/
/downloads/release/python-3110/
/downloads/release/python-3921/
/downloads/release/python-373rc1/
/downloads/release/python-380a2/
/downloads/release/python-334/
/downloads/release/python-390b2/
/downloads/release/python-390/
/downloads/release/python-376rc1/
/downloads/release/python-348/
/downloads/release/python-3923/
/downloads/release/python-3100a7/
/downloads/release/python-300/
/downloads/release/python-3150a2/
/downloads/release/python-3140a5/
/downloads/release/python-3113/
/downloads/release/python-363/
/downloads/release/python-3140a4/
/downloads/release/python-340/
/downloads/release/python-350a3/
/downloads/release/python-356/
/downloads/release/python-386rc1/
/downloads/release/python-330/
/downloads/release/python-350rc4/
/downloads/release/python-3611/
/downloads/release/python-3611rc1/
/downloads/release/python-3140a7/
/downloads/release/python-3111/
/downloads/release/python-3123/
/downloads/release/python-326rc1/
/downloads/release/python-390a1/
/downloads/release/python-3120b2/
/downloads/release/python-374rc1/
/downloads/release/python-366rc1/
/downloads/release/python-3910/
/downloads/release/python-375rc1/
/downloads/release/python-3100a3/
/downloads/release/python-323/
/downloads/release/python-367/
/downloads/release/python-393/
/downloads/release/python-3127/
/downloads/release/python-3712/
/downloads/release/python-350a4/
/downloads/release/python-3818/
/downloads/release/python-398/
/downloads/release/python-3410rc1/
/downloads/release/python-349rc1/
/downloads/release/python-357/
/downloads/release/python-341/
/downloads/release/python-357rc1/
/downloads/release/python-3106/
/downloads/release/python-387/
/downloads/release/python-31018/
/downloads/release/python-390b3/
/downloads/release/python-3120a4/
/downloads/release/python-350/
/downloads/release/python-31111/
/downloads/release/python-345rc1/
/downloads/release/python-350rc1/

but ideally we just purge all of downloads/ when needed