Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Replace CONST.* by getattribute/setattr for rally and tempest"
  - Replace CONST.* by getattribute/setattr for rally and tempest

    Directories affected:
     - functest/opnfv_tests/openstack/rally
     - functest/opnfv_tests/openstack/tempest
    and respective unit test

    JIRA: FUNCTEST-796

    Change-Id: I963f5947663f0b660337f3304defb697f5d338f3
    Signed-off-by: Linda Wang <wangwulin@huawei.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index 7050fa9..dd44f73 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit 7050fa91fca9a66e29e43a46f266f8eddba0d64f
+Subproject commit dd44f73dd4edcb170e222c21385e3bfa817b22fb