Update git submodules

* Update docs/submodules/releng from branch 'master'
  to f452f8afaba33a9f27e416693a01f33e248ea5ec
  - Update Functest K8s test case list

    It takes into account latest integrated e2e tests.

    Change-Id: Ic1273fb3ca8f5d993463ec9caa340c8829bf2882
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 17fe07c..f452f8a 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 17fe07c8056ca9e8ebf24957fedfe4f1c3784769
+Subproject commit f452f8afaba33a9f27e416693a01f33e248ea5ec