Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Remove openstack utils calls in rally and tempest"
  - Remove openstack utils calls in rally and tempest

    Mainly, update "rally deployment create --file=rally_conf.json"
    to "rally deployment create --fromenv"

    Change-Id: I6dd4c7ea2d9d6f47dee49a4fd416e62bd557f45e
    Signed-off-by: Linda Wang <wangwulin@huawei.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 7893181..fe92e6b 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 78931812eb088e9b844b3597b482a007e694059b
+Subproject commit fe92e6b54c2c756f6deacf6aea9dce9db2d0ee52