Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Fix Functest Release Notes

    It allows building this documentation via tox.
    rst files are now checked via doc8.

    Change-Id: I4cfec11b06319b5ccdcff5f7f14475375e778c01
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index ef44d1c..319c283 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit ef44d1c12fcde4cb3cea4a23078e0a984f1a7336
+Subproject commit 319c283565c4d7d38106487a12d3ce6a71cb4ba8