Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Move functest docker job in functest dir

    Change-Id: I454c327f3359688742b5d8c4299efee05d6494a2
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index e863ea8..a402cba 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit e863ea8ca7fd75e49bd922aa18dca32d09d2ba74
+Subproject commit a402cbaba57fad9d0319187158fe152a3c0e503a