POC: E2E tests on Kind and Kwok

[norbertcyran]

What type of PR is this?

/kind feature

What this PR does / why we need it:

PR is a POC of e2e test suite running on kind and kwok cloud provider. A basic test case has been added that adds an unschedulable pod and waits until a TriggeredScaleUp event is emitted and a node is scaled up.

Which issue(s) this PR fixes:

Fixes #

Special notes for your reviewer:

Run make test-e2e to run the tests. Make sure that you have the latest version of kind installed, otherwise the CA might be failing due to not existing DRA resources (if we were to merge these e2e tests, we'd have to automate that).

Does this PR introduce a user-facing change?

NONE

Additional documentation e.g., KEPs (Kubernetes Enhancement Proposals), usage docs, etc.:

[k8s-ci-robot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: norbertcyran
Once this PR has been reviewed and has the lgtm label, please assign feiskyer for approval. For more information see the Code Review Process.

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Needs approval from an approver in each of these files:

• cluster-autoscaler/OWNERS

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[k8s-ci-robot]

Hi @norbertcyran. Thanks for your PR.

I'm waiting for a github.com member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

Once the patch is verified, the new status will be reflected by the ok-to-test label.

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