Update git submodules

* Update docs/submodules/releng from branch 'master'
  - fuel: Enable OPNFV CI gate security

    Fuel project was left out of the list of projects against which
    security audit jobs should run, so enable it.

    Change-Id: I6d59197f78dfaf381d634c9d1821a7383506276c
    Signed-off-by: Alexandru Avadanii <Alexandru.Avadanii@enea.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index dc7eea8..a020297 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit dc7eea848025842901163f4bd91eaaaf81e3ab0e
+Subproject commit a0202977d0c785f67def4ad1c43bb321a6220c68