Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Use Sphinx to create API documentation

    The packages/modules which are part of Functest framework are parsed.
    It also generates ODL TestCase API as it's well commented.

    The content is simply referring to modules.

    Change-Id: I873ae1535fc05c9d7e426f5fb54f9579eb01e6d1
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 55bc0f6..bebaf6e 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 55bc0f6446ed71a37282de6bd08fb1ee42152378
+Subproject commit bebaf6e856aced93dd5b0498fedd160bf7bf8947