Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Fix pylint errors

    They are highlighted by the last pylint version.

    Change-Id: I473212a413013492716993fb536903b13bff66ed
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index f1353ff..a1a85f7 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit f1353fff60344b01c588d9724b3b1de819cbe661
+Subproject commit a1a85f7cc121b1c1176f2b79b22f4e4bca43177a