Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Create Member role if required

    It seems there is no common role configuration between OPNFV
    installers. Then it creates/removes the expected role if required.

    Change-Id: I38a92e2522a401f46a59813b9e9443a11d6c7060
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index d97c579..b3916af 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit d97c57931002895f2af45e521fb8fc20a11e82ca
+Subproject commit b3916af1754e02bb952b431a36c70b0c3aee9a0a