Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Publish vmready scenarios

    It will simplify code in juju_epc, tempest, etc.

    Change-Id: I195ae1d7d75f1c2f2eba76ae3c5307153e9b9759
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index e5f28f7..b2824f4 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit e5f28f769cf230af91cdd6651e19c64fba22e5a2
+Subproject commit b2824f4dc2f32731667e2cf511635dc885d08be9