Update git submodules

Update git submodules

* Update docs/submodules/functest from branch 'master'
  - Merge "Create API to update openrc"
  - Create API to update openrc

    API: /api/v1/functest/openstack/action
    METHOD: POST
    PARAMS:
    {
        "action": "update_openrc",
        "args": {
             "openrc": {
                 "OS_AUTH_URL": "http://192.168.30.222:5000/v3",
                 "OS_IDENTITY_API_VERSION": "3",
                 "OS_IMAGE_API_VERSION": "2",
                 "OS_PASSWORD": "console",
                 "OS_PROJECT_DOMAIN_NAME": "default",
                 "OS_PROJECT_NAME": "admin",
                 "OS_TENANT_NAME": "admin",
                 "OS_USERNAME": "admin",
                 "OS_USER_DOMAIN_NAME": "default"
             }
        }
    }

    JIRA: FUNCTEST-855

    Change-Id: I7c935483c264f2b1b47239684392c8a37dc23d26
    Signed-off-by: Linda Wang <wangwulin@huawei.com>