Update git submodules

Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Adding a new verification job for testapi UI."
  - Adding a new verification job for testapi UI.

    TestAPI web portal is being developed as part of an intern
    project. Angular JS framework is being used to develop UI
    functionalities. Also, corresponding unit tests have been
    written. Grunt JS is javascript task runner which is used
    to run tasks such as unit tests, coverage report etc. grunt e2e is
    the name of the task to run unit tests. Tasks are defiend in
    Gruntfile.js.

    To run the unit tests, google chrome is required. Here, the unit tests are
    ran using headless google chrome. Finally cobertura coverage report is
    generated.

    JIRA: RELENG-382

    Change-Id: Ib12f8dd851276ab0e4116beb122518e9431d5b61
    Signed-off-by: Sakala Venkata Krishna Rohit <rohitsakala@gmail.com>