Update git submodules

* Update docs/submodules/releng from branch 'master'
  to 6d967922375a6cadf14c2a4e458f542b4f9d848a
  - Merge "Configure email publishers in Functest jobs"
  - Configure email publishers in Functest jobs

    Change-Id: Iae0532ee2d57b9f67bc6ef1ba39c8a450d668e3d
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 9b755e2..6d96792 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 9b755e2d6458afec266bd8eb5ebd06083bc11d2c
+Subproject commit 6d967922375a6cadf14c2a4e458f542b4f9d848a