Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Mute all rally messages

    The are now printed in functest.log only.

    JIRA: FUNCTEST-950

    Change-Id: I1fdd0e0f1be19fc5e7536326acb6a66645610696
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 82bb54e..78c0b09 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 82bb54e41ab0f8365ca5e1e6469860287d089a1c
+Subproject commit 78c0b09a2cf3a57ae5d4f8cfe67ab66ad9d8aef2