Register scale subresource for Deployments and ReplicaSets.
Register scale subresource for Deployments and ReplicaSets.

Define etcd registry methods for scale subresource in Deployments and
ReplicaSets. Register them with the API server.

Kubernetes-commit: 9e99f9fa0e45a8f56c399f9cbb8047a4f39dde4e

kubernetes/api