Update git submodules

Update git submodules

* Update docs/submodules/releng from branch 'master'
  - Merge "Update Automation Job Repo to releng-testresults"
  - Update Automation Job Repo to releng-testresults

    Switches the jjb/releng/automate jobs to use the releng-testresults
    repository now that files under utils/test have been migrated.

    Assumes shell and python scripts required for the job are now located
    in the releng-testresults repo under ./ci/

    Change-Id: I1f036d9d8abd988477e18b2f2efd8f80d550a61c
    Signed-off-by: Trevor Bramwell <tbramwell@linuxfoundation.org>