Replace keystone's wsgi config with custom config
Replace keystone's wsgi config with custom config

Ansible's template action supports replacing keystone's wsgi default
config with custom config, it should only add with_first_found param
to config.yml to support this.

Change-Id: Id66302802db9a57188067982ea697f16faa1d8eb
Closes-Bug: #1609655

openstack/kolla,openstack/kolla,stackforge/kolla,rahulunair/kolla,stackforge/kolla,mandre/kolla,dardelean/kolla-ansible,intel-onp/kolla,rahulunair/kolla,coolsvap/kolla,mrangana/kolla,mandre/kolla,intel-onp/kolla,nihilifer/kolla,dardelean/kolla-ansible,coolsvap/kolla,mandre/kolla,nihilifer/kolla,stackforge/kolla,coolsvap/kolla,GalenMa/kolla,mrangana/kolla,GalenMa/kolla,dardelean/kolla-ansible