Update git submodules

Update git submodules

* Update docs/submodules/releng-xci from branch 'master'
  - Merge "xci: xci-deploy.sh: Calculate and print the total deployment time"
  - xci: xci-deploy.sh: Calculate and print the total deployment time

    It's useful to know how XCI performs in terms of duration time so
    use the bash $SECONDS variable to calculate the total amount of time
    it takes for a full XCI deployment. Moreover, use the 'ts' command to
    print a timestamp for every command executed. This will help developers
    identify tasks which take a lot of time to complete and possibly
    optimize them.

    Change-Id: I75a8cb8c05957bb205e63210d6cafaf54d989f32
    Signed-off-by: Markos Chandras <mchandras@suse.de>