Update git submodules

Update git submodules

* Update docs/submodules/releng-xci from branch 'master'
  - xci: Bump OpenStack Ansbile SHAs

    * Bump up upstream SHAs
    * With these upstream SHAs, OSA installs neutron-agent container on
    controller node which would require eth12 interface on controller for
    establishing vlan provider networks. so adding eth12 interface and
    linking it with br-vlan over br-vlan-veth link.

    Change-Id: Iaf7cbe6e41dcfd15ec6527c5a50701f2d05eaad8
    Signed-off-by: Markos Chandras <mchandras@suse.de>
    Signed-off-by: Periyasamy Palanisamy <periyasamy.palanisamy@ericsson.com>