Update git submodules
Update git submodules

* Update plugins/replication from branch 'stable-2.16'
  to 4ed1a3eaa052672422f5f19468736de42e4d4d27
  - ReplicationIT: Do not use deprecated getRef()
    
    Change-Id: Idf56bcb4d9e7ed514d1011f62d6738d124ba870a
    
GerritCodeReview/gerrit,qtproject/qtqa-gerrit,GerritCodeReview/gerrit,WANdisco/gerrit,qtproject/qtqa-gerrit,GerritCodeReview/gerrit,WANdisco/gerrit,qtproject/qtqa-gerrit,qtproject/qtqa-gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit,GerritCodeReview/gerrit,qtproject/qtqa-gerrit,WANdisco/gerrit,GerritCodeReview/gerrit,qtproject/qtqa-gerrit,WANdisco/gerrit,WANdisco/gerrit,WANdisco/gerrit,qtproject/qtqa-gerrit,WANdisco/gerrit