Use the default policy.json for Qinling
Use the default policy.json for Qinling

To avoid complexity and possible issue during the Qinling usage
we should build the Qinling Docker images with the policy.json file.

The reason why is because Qinling doesn't have default policies.

Change-Id: I13f64fcbfb3150efcb94af267f463eaddb11621d
Closes-Bug: #1830900
Implements: blueprint qinling-support

openstack/kolla,stackforge/kolla,stackforge/kolla,openstack/kolla,rahulunair/kolla,stackforge/kolla,rahulunair/kolla