Update git submodules

* Update plugins/hooks from branch 'master'
  - Merge branch 'stable-2.14'
    
    * stable-2.14:
      Fix hook configuration names to match documentation
    
    Change-Id: I66c9fadef5c2615a39af06f9560bbb9d4d477c17
    
  - Fix hook configuration names to match documentation
    
    Most hooks in the documentation are named with "Hook" suffix, but
    in the code the "Hook" suffix was omitted. This prevented the hook
    from being found when the administrator configured it with the
    documented name.
    
    Fix the values used, to match the documented values.
    
    Also update the documentation to add the "Hook" suffix where it was
    missing.
    
    Bug: Issue 6508
    Change-Id: Icdfdaaa2a4b89ed636e9165fc073234fb79abd2b
    
diff --git a/plugins/hooks b/plugins/hooks
index ff123a4..18edefa 160000
--- a/plugins/hooks
+++ b/plugins/hooks
@@ -1 +1 @@
-Subproject commit ff123a435444155f89625f8f3279c2912608b2bf
+Subproject commit 18edefac123218ef61af7e4926b2c56824eef03a