Update git submodules

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

    JIRA: RELENG-254

    Change-Id: I89b7a0498399602c488c0045e7cc4368b5f19f14
    Signed-off-by: Trevor Bramwell <tbramwell@linuxfoundation.org>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 78a8256..3e149c8 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 78a82560cc02ca25b6cf8e642203168950c9255d
+Subproject commit 3e149c8b4268538f5cf195237328f5e32b7c0c4f