Automatic merge from submit-queue

Enqueue controllers after minreadyseconds when all pods are ready

@janetkuo this should address https://github.com/kubernetes/kubernetes/issues/41697#issuecomment-281851377. Impossible to unit test this but it should stabilize some of our deployment e2e tests that occasionally fail because of availableReplicas not being updated.

It should also fix https://github.com/kubernetes/kubernetes/issues/41641

Eventually I would like AddAfter to be able to cancel previous invocations of the same key so I opened https://github.com/kubernetes/client-go/issues/131

@kubernetes/sig-apps-bugs