Merge branch 'stable-2.8'

* stable-2.8:
  Never replicate automerge-cache commits
  Fix: failure to create to missing remote repository via git://
  Improve info logging related to repository creation and deletion
  Clarify replication of refs/meta/config when refspec is 'all refs'
  Differentiate error logs for local and remote repository errors

Conflicts:
	src/main/java/com/googlesource/gerrit/plugins/replication/PushOne.java

Change-Id: I41eac82e06f35ba45e984e65e970cd967cfeff46