Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Update Functest to meet last snaps updates

    It removes obsolete mockey patches in Rally unit tests and adds
    keystone client as params when needed in orchestra_*ims.py [1].

    [1] https://gerrit.opnfv.org/gerrit/#/c/52473/

    Change-Id: Id02954d16f5f54cc0c390fadb498e14c6bab6ff9
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 58dd717..02bd6e3 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 58dd7174657c66254ae4c511850ac7d49b1dd98f
+Subproject commit 02bd6e30668b477781ab007e82bfe2a207baa8b7