Update git submodules

Update git submodules

* Update docs/submodules/releng-xci from branch 'master'
  - Merge "xci: Add ability to pass command line options to xci-deploy.sh"
  - xci: Add ability to pass command line options to xci-deploy.sh

    We now support multiple PDF files so instead of introducing another
    env variable, we can simply pass this information as command line
    arguments to xci-deploy.sh. We can extend the script to allow more
    options line verbosity, scenario name, functest details etc so we
    can get rid of multiple env variables.

    Change-Id: I6c4a8d6e8b70e91746a659de923fee19019ed5e0
    Signed-off-by: Markos Chandras <mchandras@suse.de>