Update git submodules

Update git submodules

* Update docs/submodules/releng-xci from branch 'master'
  - Ensure the pinned versions of components match to the pinned OSA

    The versions for the OpenStack services and global requirements
    need to be pinned alongside with the OSA SHA1 and the role versions
    to ensure we pinned everything.

    This change is required for osa-periodic jobs as well since that
    job will use sources-branch-updater.sh script and the script updates
    these files to ensure things are pinned correctly.

        modified:   ansible-role-requirements.yml
        modified:   global-requirement-pins.txt
        modified:   playbooks/defaults/repo_packages/openstack_services.yml
        modified:   releasenotes/notes/glance-init-config-overrides-d1c8c3dcc50c109a.yaml
        modified:   releasenotes/notes/neutron-init-config-overrides-9d1d2b3b908705ed.yaml
        modified:   releasenotes/notes/trove-init-config-overrides-a78ed428a32adef8.yaml

    By doing this change, we do not need to have any
    magic to capture updates to those files. Just updating the files
    we keep in xci/file folder will be sufficient and they get copied
    over during the playbook execution.

    Change-Id: Iae0db22574a0368e896132469a8587d1457ce177
    Signed-off-by: Fatih Degirmenci <fatih.degirmenci@ericsson.com>