Update git submodules
Update git submodules

* Update plugins/replication from branch 'stable-3.0'
  to 7c31087623674bea9b3848a0323853344c5aa260
  - Merge branch 'stable-2.16' into stable-3.0
    
    * stable-2.16:
      Fix naming for delay for draining the replication event queue
    
    Change-Id: I3cba1756a10a1c12db96d04ca55d3feb7bc8784e
    
  - Fix naming for delay for draining the replication event queue
    
    Thread.sleep() takes milliseconds as an argument, not seconds.
    Otherwise, multiplying by 1000 would be a bug.
    
    Also switches to returning a long, which fixes a potential overflow when
    multiplying by 1000.
    
    Change-Id: I3fc5c939e8c09c134e24fa9381e96e6529b5be4d
    
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