Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Fix an unorderable types error (if python 3)"
  - Fix an unorderable types error (if python 3)

    Change-Id: I07c5a548f10a1779faead4d9c596a1976aff8866
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 794493f..a3dd616 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 794493f95dc235ada697f9fd7f6d983b48521b4d
+Subproject commit a3dd6167706695a73a72486a1217d32c76071592