Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Protect against self.suite = None

    Change-Id: Ie3370ebfdd51b9aff707e50b754ca52796e49fbf
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index ac81662..34b2583 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit ac816628995c1e017f12ba23435ae07d24ceecac
+Subproject commit 34b2583ee5509daf8b237a9c55173026ad42b2bc