Update replication plugin to latest revision

- Double check if a ref is missing locally before deleting from remote

Change-Id: Ief351bf75fab5a6de839cfc28af02d67c51aadff
diff --git a/plugins/replication b/plugins/replication
index 945c842..43af15b 160000
--- a/plugins/replication
+++ b/plugins/replication
@@ -1 +1 @@
-Subproject commit 945c842f9c884469ec0fb2d883d6cda552e97747
+Subproject commit 43af15baab9b2312677000c47313026f34352abb