Automatic merge from submit-queue (batch tested with PRs 44084, 42964)
Removing both finalizers in federation controllers in a single update
Fixes https://github.com/kubernetes/kubernetes/issues/43828
There is a bug right now where the controller fails to delete the object if one finalizer is removed and the second isnt.
This updates the code so that both the finalizers are removed in a single API call. Kept the code changes minimum to enable cherrypick in 1.6.x
cc @csbell @kubernetes/sig-federation-bugs