Update replication plugin

* Fix replication at start-up
* Support replication of HEAD updates
* Splitting replication queue from config.
* Extra info log on replication 'git push' to remote

Change-Id: I57e41ef1b8b0c63e60ee202172c944a0d3f6a409
Signed-off-by: Edwin Kempin <edwin.kempin@sap.com>
diff --git a/plugins/replication b/plugins/replication
index 5ee79cc..23b83fb 160000
--- a/plugins/replication
+++ b/plugins/replication
@@ -1 +1 @@
-Subproject commit 5ee79cc5355e24bee7d38f697aa834e1bd6e0e7d
+Subproject commit 23b83fb7c1d62d436a66afd3194a3d653956b347