Update git submodules

* Update docs/submodules/releng from branch 'master'
  to 616b070a82138636bad2150f886196a118fdddcc
  - Remove Functest from security scan list

    Security scanning always fails due to falsy rules (e.g. wget in
    Dockerfile) which have never been updated.

    It avoids falsy failures in Functest gate jobs.

    Change-Id: Ie7d82c6117733bdd02f0d5bc9dcd6d4974830049
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 6e6a521..616b070 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 6e6a521b3e8baeaaedaf65dcfba066d1654b5c9c
+Subproject commit 616b070a82138636bad2150f886196a118fdddcc