Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Update tempest to inherit from VmReady1

    It also copies tempest.conf due to side effects raised by
    Barbican plugins.

    Change-Id: Ie87680f5d2e68527a5a61aac302838afc339dde8
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index b2824f4..9ef0bcb 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit b2824f4dc2f32731667e2cf511635dc885d08be9
+Subproject commit 9ef0bcbeb22ca70ff2ceb750c08fb24e46a9d0ea