Update git submodules
Update git submodules

* Update plugins/replication from branch 'master'
  to 5a3519e6e1733e2515900866b8db9ca98ba9da7e
  - Merge branch 'stable-3.0'
    
    * stable-3.0:
      Revert "PushOneTest: Remove unused mock ReplicationQueue"
    
    Change-Id: I28dc0b38e7f1eb22a6393d7cf87ff77d93e9c53f
    
  - Merge branch 'stable-2.16' into stable-3.0
    
    * stable-2.16:
      Revert "PushOneTest: Remove unused mock ReplicationQueue"
    
    The revert done on stable-2.16 is omitted in this merge, since the
    ReplicationQueue is actually not used here.
    
    Change-Id: I4e869981a5585a2d24ff716f6c6a335acb051e68
    
  - Revert "PushOneTest: Remove unused mock ReplicationQueue"
    
    This reverts commit 04bd5274b5b9d852989f92ad42a3ceea3f917238.
    
    Reason for revert: ReplicationQueue is still being used and cannot be
    removed.
    
    Change-Id: I1d573a579e714e71757c3483a98bad2125fd4865
    
GerritCodeReview/gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit