Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Fix import and docstrings in onos/teston"
  - Fix import and docstrings in onos/teston

    Change-Id: Ie38f3b0ab8805cd7ca3e946533be37598be9434e
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 15a92a8..7a9a5e6 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 15a92a87526eba65990ed4565dbb4a06ee37c33f
+Subproject commit 7a9a5e6c6eaa9f38eb455f4822934c60c7bc8fb5