Update git submodules

* Update plugins/replication from branch 'master'
  - Merge branch 'stable-2.15'
    
    * stable-2.15:
      Document which branches must be replicated to replicate the account data
    
    Change-Id: Ic4d1fdc228fd1c5c2da51a8f816ff796f9bfb26e
    
  - Document which branches must be replicated to replicate the account data
    
    Change-Id: I2c9dc06927cd8e9e541eb032829029bdfac8db6e
    Signed-off-by: Edwin Kempin <ekempin@google.com>
    (cherry picked from commit 93ab1609a4ba32e9466ff0649317b84a211285ad)
    
  - Document which branches must be replicated to replicate the account data
    
    Change-Id: I2c9dc06927cd8e9e541eb032829029bdfac8db6e
    Signed-off-by: Edwin Kempin <ekempin@google.com>
    
diff --git a/plugins/replication b/plugins/replication
index 2540766..5f99e16 160000
--- a/plugins/replication
+++ b/plugins/replication
@@ -1 +1 @@
-Subproject commit 25407661098f4848e771395d62da2feca1135793
+Subproject commit 5f99e163e9d3939e77a897a3216619aebd62ba3c