Update git submodules

* Update docs/submodules/releng from branch 'master'
  to 5f817a39316877a864bde19f0c57637591deb220
  - Update Functest Jenking view regex

    It takes the new ovn jobs into account.

    Change-Id: Ie029f803bf06ef569c347f8b94fd19ca779ebd9b
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index a7981bb..5f817a3 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit a7981bb0f28f8d0faa3285d280450f981738f571
+Subproject commit 5f817a39316877a864bde19f0c57637591deb220