Update git submodules

* Update docs/submodules/promise from branch 'master'
  - Update logger via logging.getLogger()

    1. The module functest.utils.functest_logger has been deleted and
       logger has been reconfigured in functest [1].
    2. Update run_tests.py to get loggers via logging.getLogger().

    [1] https://gerrit.opnfv.org/gerrit/#/c/34019/

    JIRA: FUNCTEST-824

    Change-Id: I34d73aadc420a5381651d65fb6b55f0f58e0c11e
    Signed-off-by: Linda Wang <wangwulin@huawei.com>

diff --git a/docs/submodules/promise b/docs/submodules/promise
index 41c8034..e5691c0 160000 (submodule)
--- a/docs/submodules/promise
+++ b/docs/submodules/promise
@@ -1 +1 @@
-Subproject commit 41c803455971d76e7a6d8cd9cde3371525138db9
+Subproject commit e5691c01975e9a3867a17c4fd9b4427bb15f0f10