Automatic merge from submit-queue

Create client from API version passed in config or use default

When creating a client read the `GroupVersion` value passed in the `restclient.Config`. If the passed `GroupVersion` does not match current group or is not enabled fallback to default `GroupVersion` for that group.

This PR should allow accessing `ScheduledJob` properly in `batch/v2alpha1`.

@smarterclayton @deads2k @caesarxuchao @lavalamp ptal