Update git submodules

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

    JIRA: RELENG-254

    Change-Id: Ia9246b4fee30ea350b57563241fb83c4f03a3b55
    Signed-off-by: Trevor Bramwell <tbramwell@linuxfoundation.org>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index cb6e376..6cc808a 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit cb6e3769f3eda0b94b209b45c7fe4b7113378465
+Subproject commit 6cc808a99adc883c6127004d39e46d7a85aee105