Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Use CONST to retrieve db_url rather than getter function"
  - Use CONST to retrieve db_url rather than getter function

    1. Remove get_db_url()
    2. If TEST_DB_URL declared in env, update test_db_url in
       config_functest.yaml file during env preparation
    3. No matter TEST_DB_URL declared in env or not,
       Result_DB = CONST.__getattribute__("results_test_db_url")

    JIRA: FUNCTEST-763

    Change-Id: I20da7ef98bbcc56731e0ff7061b05c1dde6cbfc3
    Signed-off-by: Linda Wang <wangwulin@huawei.com>

diff --git a/docs/submodules/functest b/docs/submodules/functest
index cce3644..8fde61d 160000 (submodule)
--- a/docs/submodules/functest
+++ b/docs/submodules/functest
@@ -1 +1 @@
-Subproject commit cce3644b0b0186676de974d32e02219e2ae5dc50
+Subproject commit 8fde61d643c17b012659d8343ab3c06526958a05