Update git submodules
Update git submodules

* Update plugins/replication from branch 'master'
  to 99c9794a6d5d649bd60e1f0d8f59f79f929f7ba6
  - Merge "Move HttpClientProvider to the ReplicationModule"
  - Move HttpClientProvider to the ReplicationModule
    
    The HttpClientProvider was bound in each per-destination child injector.
    However, there is nothing destination specific in the
    HttpClientProvider, so move it to the parent injector.
    
    Change-Id: Ic89fabbcb1787896aff08035093a7f208eac88e1
    
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