Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Add class attribute docstrings in testcase.py"
  - Add class attribute docstrings in testcase.py

    Change-Id: I91a5c6fb14f7c76a348bb4329d023bab53a3804c
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index d905d25..a3f027e 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit d905d25fca7e76c25c96450a833b23238bae8c01
+Subproject commit a3f027e8fe6d0198c5dbcea9e0292bc0e21f54fd