Update git submodules

* Update plugins/replication from branch 'master'
  to 4f2eb3288571eb340f6336dc7d1dd3637bfa9b36
  - Merge branch 'stable-2.16'
    
    * stable-2.16:
      Pretty-print stored ref-updates for replication
      Remove obsolete warning about events cancellation
    
    Change-Id: I2ac1bcd4f60ab1d7dd7c1c4516ad78a8c6065d2c
    
  - Pretty-print stored ref-updates for replication
    
    Allow having a more understandable printing of the stored
    ref-update events when printed in the logs.
    
    Change-Id: I8d7fd1bfb89a1ff39d89395aace7c473bb3004ed
    
  - Remove obsolete warning about events cancellation
    
    Now that replication events are persisted across restarts
    the warning of cancellation is obsolete and misleading.
    
    Change-Id: Ia5e2205ae3b8779a6741541c7003f2f47c8e3fce
    
diff --git a/plugins/replication b/plugins/replication
index 0268da0..4f2eb32 160000
--- a/plugins/replication
+++ b/plugins/replication
@@ -1 +1 @@
-Subproject commit 0268da0f5f275eef613014548f60771d891f761d
+Subproject commit 4f2eb3288571eb340f6336dc7d1dd3637bfa9b36