Update git submodules

Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Add watchdog into testresults server to restart docker containers."
  - Add watchdog into testresults server to restart docker containers.

    Unexpected crashing of docker containers were occuring. So, a cron script
    is to be run in regular intervals which will check for status of the
    deployments and restart docker if necessary. Docker restart is seen
    as a solution to solve majority of crashes.

    Suggest if there is a better approach.

    Change-Id: I40d56180350844b4a0f766e1b10a9fabfa02d3be
    Signed-off-by: Sakala Venkata Krishna Rohit <rohitsakala@gmail.com>