Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "bugfix: autoupdate failed due to mingle with watchdog"
  - bugfix: autoupdate failed due to mingle with watchdog

    1. In the original design, if the auto-job starts soon after
    the watchdog starts, the auto update might be mingled with
    connectivity check, which may lead to update failure. so instead,
    the connectivity is checked first, if failed and module is not in deploying,
    restart module.
    2. only automate-docker-deploy job will impact the container status during
    auto-job, so substitue auto-job status check with automate-docker-deploy's
    3. the watchdog is not only for testapi, but also for reporting, and
    all docker container server deployed in testresults.opnfv.org, so move it under
    utils/test/opts, which is leveraged to store tool-sets employed for testing tools.

    Change-Id: I766f3a534a3d510ce7509d4e742150150ccd8f54
    Signed-off-by: SerenaFeng <feng.xiaowei@zte.com.cn>

diff --git a/docs/submodules/releng b/docs/submodules/releng
index 07e7865..49ad539 160000 (submodule)
--- a/docs/submodules/releng
+++ b/docs/submodules/releng
@@ -1 +1 @@
-Subproject commit 07e7865f1c3ca8c12bc6cd45befaa7bbacf489b6
+Subproject commit 49ad5396069f404522a6fcfa5bb937bd71ab8e82