Update git submodules

Update git submodules

* Update docs/submodules/releng-xci from branch 'master'
  - Merge "Integrate os-nosdn-osm scenario"
  - Integrate os-nosdn-osm scenario

    This change integrates os-nosdn-osm scenario.

    The installation of OSM is done as post-deployment. This is achieved by
    the addition of the new playbook named post-deployment.yml in scenario
    role folder.

    This mechanism is available for all OpenStack scenarios. If anything
    needs to be done for a specific scenario as part of the post-deployment,
    it can be achieved by creating playbook post-deployment.yml.

    If post-deployment.yml exists in scenario role, the framework will run
    it once the regular deployment playbooks are run successfully. If the
    file does not exist, it will be skipped.

    The location of the post-deployment.yml is
        releng-xci-scenarios/<scenario>/role/<scenario>/tasks/post-deployment.yml

    This is only implemented for OpenStack scenarios currently and similar
    mechanism is needed for K8S scenarios as well which will be implemented
    in a separate change.

    installer-type:osa
    deploy-scenario:os-nosdn-osm

    Change-Id: I16780abffca39699eb2f38f662479f0e4d551504
    Signed-off-by: Fatih Degirmenci <fdegir@gmail.com>