Fixes <xi:include> to point to  git.openstack.org

Changes the location point <xi:include> to git.openstack.org as it is a more reliable source for OpenStack projects.

Partial-Bug: #1338678

Change-Id: I0c80d1bd64a2dd23e973caddb19534a8e19aed4e
Merge "Fixes <xi:include> to point to  git.openstack.org"