Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Bypass Cloudify tenancy issues

    It creates a second user to bypass possible bugs and correctly
    exits on failure if it cannot connect to manager via ssh.

    It leverages on the _member_ user as much as possible.
    It also switches all flavor names to avoid conflicts.

    It also increases debug logs.

    Change-Id: I59cb071248b5ae50952b9f16eb29f7be3f3644ae
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 8238ec0..a354230 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 8238ec092d2823fbb77537169580721ed0c4d03e
+Subproject commit a3542307b369ab91ee24d1fed534b565cd4030d7