Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Fix Yamllint Violations for jjb/moon"
  - Fix Yamllint Violations for jjb/moon

    JIRA: RELENG-254

    Change-Id: If7e19dfdaf3b9d5df79b4d22fd13578d64481cb1
    Signed-off-by: Trevor Bramwell <tbramwell@linuxfoundation.org>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 788d467..be337be 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 788d4671ab9707c3fbb71b39822c989ca6a913fa
+Subproject commit be337bec1bcda01cd32b51868a8b031ecb217536