Update git submodules
Update git submodules

* Update plugins/replication from branch 'stable-2.15'
  to 6acd8e6c042abe22c5c10973d96fbda7f979748a
  - Merge branch 'stable-2.14' into stable-2.15
    
    * stable-2.14:
      Make loggers private
    
    Change-Id: I2ebbad6da3509e2d62e8fb48ebba6d0a2caf4b7f
    
  - Make loggers private
    
    Loggers shouldn't be shared between classes and hence they should be
    private.
    
    Change-Id: Iadd54c73455665b53cf9b58918b2e8c5cf19357e
    Signed-off-by: Edwin Kempin <ekempin@google.com>
    
WANdisco/gerrit,GerritCodeReview/gerrit,WANdisco/gerrit,WANdisco/gerrit,qtproject/qtqa-gerrit,WANdisco/gerrit,GerritCodeReview/gerrit,qtproject/qtqa-gerrit,qtproject/qtqa-gerrit,WANdisco/gerrit,qtproject/qtqa-gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit,qtproject/qtqa-gerrit,qtproject/qtqa-gerrit,WANdisco/gerrit,WANdisco/gerrit,qtproject/qtqa-gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit