Update git submodules

* Update docs/submodules/functest from branch 'stable/fraser'
  - Set fraser as branch in cloudify_vrouter repos

    Change-Id: I1338c07f7eab398723b5e7599cf94b032d014cdd
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 3e9dba6..a163cbf 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 3e9dba631d04fe4faf58b06aa774311b3caa25f9
+Subproject commit a163cbfea8bf4b310c044d542c869406d759713a