Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Generate xtesting.yaml via collivier.xtesting

    It adds project in jjb names to allow loading xtesting and functest
    jobs in one command.

    Change-Id: I120ab713cb73abc1f6aaf195e60fbcec9e45f740
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 29e7d69..0c8ee50 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 29e7d692856dea7cc95fed2e145f79f837305df7
+Subproject commit 0c8ee507c898de45f5b6ce1a6d2a4271272db73b