Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Stop reading SDN_CONTROLLER env var.

    Joid doesn't support ODL and this exception is no longer needed.
    It will be a simple switch from SDN_CONTROLLER to SDN_CONTROLLER_IP
    if Joid supports ODL again.

    Change-Id: I925965f9c1adf24914e4110ff3206443f4063ac8
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 9476136..117a1db 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 9476136e4f67cbb9853683c871bb699918a45ee6
+Subproject commit 117a1db3e15f348ef7c41e2b697849755fdf2b35