Merge branch 'stable-2.16' into stable-3.0

* stable-2.16:
  ReplicationIT: fix flakiness of shouldReplicateNewBranch
  ReplicationIT: remove dependency of ReviewDb/NoteDb
  ReplicationIT: Add a test that HEAD update is replicated
  ReplicationIT#shouldReplicateNewBranch: Create branch on local project
  ReplicationIT: Don't swallow exceptions on failed repository operations
  ReplicationIT: Fix typo in method name
  AdminApi: Reintroduce return value of methods
  Store replication tasks instead of ref-update events
  ReplicationIT: Don't swallow exceptions on failed repository operations
  ReplicationIT: Add explicit test for replication of new branch
  ReplicationIT: Change test method name to reflect actual operation
  Allow AdminApiFactory to be replaced dynamically

Adapt project creation to use ProjectOperations.

Change-Id: I3d9cd916be200f1935be2a60d9a4e715e4b859a3