Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Remove functest k8s gambia jobs

    Change-Id: Ia912f0bb5ccba1c0af02f05372bfa2005fdd13bb
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index c22c5cf..e016a11 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit c22c5cfc963812d813d88ae0f0f4027cc0ce95ad
+Subproject commit e016a1177abbc0069d8eb172cb367f0d03d7f3bb