Update git submodules

Update git submodules

* Update docs/submodules/releng from branch 'master'
  - xci: Add ansible files for sandbox ha flavor

    This patch adds noha target host configuration playbook, inventory, variable
    files and so on to use until we have time to fix things more properly and some
    other functionality becomes available in upstream. This approach will result in
    duplicates but it is something we can perhaps live with.

    The playbook to configure target hosts will be same with the one we will
    have for noha flavor but for different for the flavor mini.

    The user variables and openstack user configuration will be different between
    flavors and keeping deployment specific configuration.

    Change-Id: I4e2b375b9f8f6bd5f8c5da91a522b78d61a58125
    Signed-off-by: Fatih Degirmenci <fatih.degirmenci@ericsson.com>