Update git submodules

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

    JIRA: RELENG-254

    Change-Id: Iaf0c4a23f5d9b6117ec7a455ee1650e68893f4b3
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 6f488fb..b8bea99 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 6f488fb6b767d72ca1089d0720928fefce357fab
+Subproject commit b8bea998e4a370ad7127fd4d72a1fc93765e751a