Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Fix user/project create operations

    os_client_config creates a singleton which forbids the previous
    processing. It also cleans remaining resources and allows
    publishing public images (needed by Tempest)

    Change-Id: I3a0ad8664b263d3ee8599efe2973465006d5750b
    Signed-off-by: Cédric Ollivier <cedric.ollivier@orange.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 9ef0bcb..c717c43 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 9ef0bcbeb22ca70ff2ceb750c08fb24e46a9d0ea
+Subproject commit c717c43b1257e126296a4b1d697c8f6a72728855