Update git submodules

* Update plugins/replication from branch 'stable-2.16'
  to bc9c7eaca297578e2e86e961118336a72227ac87
  - GerritSshApi: Consistently use logError method
    
    Change-Id: I9aeb27ce9e535c177fcdab3bee417c77233e8310
    Signed-off-by: David Pursehouse <dpursehouse@collab.net>
    
  - GerritSshApi: Make sshHelper and uri members protected
    
    This allows them to be accessed by classes that extend GerritSshApi.
    
    Change-Id: Ie2ca2da1303ed4a14ac6074e37696c5f509f3ebe
    Signed-off-by: David Pursehouse <dpursehouse@collab.net>
    
diff --git a/plugins/replication b/plugins/replication
index 23037c5..bc9c7ea 160000
--- a/plugins/replication
+++ b/plugins/replication
@@ -1 +1 @@
-Subproject commit 23037c51be039e2e94d9f4fd54d4d38cdc88ac82
+Subproject commit bc9c7eaca297578e2e86e961118336a72227ac87