Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Force the use of public endpoints in shaker.py

    It now leverages on the new user created and gets the public endpoint.

    Change-Id: Iead106e614a73708cb13e33b49a2f438766a3056
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 27a819c..192cdec 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 27a819cfea29ec903b44cea984b483f61ad61e10
+Subproject commit 192cdecb5d7ed16641d1c5520450be38e9e0f166