Update git submodules

* Update docs/submodules/releng from branch 'master'
  to 117a83def8ff1139ccad4af3ca8fceed30cf8f40
  - Merge "Remove all cnf-conformance exclusions"
  - Remove all cnf-conformance exclusions

    It was backported in all active branches.

    Change-Id: Iadb9e21c943eaf3ca07ff765a4ad2538c49dd131
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 4b2b8fa..117a83d 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 4b2b8fa0289411c77b2c5887b8837d0630c9599f
+Subproject commit 117a83def8ff1139ccad4af3ca8fceed30cf8f40