Merge branch 'stable-3.2' into stable-3.3

* stable-3.2:
  Propagate FetchRefReplicatedEvent
  Send small refs as a fetch call payload
  Send ref content as a fetch call payload
  Index change upon propagation
  Propagate FetchRefReplicatedEvent upon a Ref fetch

Change-Id: I849d9244c623b9fa584f9ac75e773c2c3c3cb462