Optimize stub RDO calls

[Arithmomaniac]

There are use cases where a model might just need to contain an ArtifactID - for example, if you only care about the ArtifactID of an associative object.
A provider should skip work on these items for Get or Update operations, except to process any child objects (if they exist).

[mrobustelli]

would need to check if only ArtifactID is populated before updates or any action.

[mrobustelli]

@hhristov-tsd will work meet with his team 4/15. He will follow up with @mrobustelli after and we will decide path forward from there. We need an architectural vision before we start work.