Switch to www_authenticate_uri for barbican
Switch to www_authenticate_uri for barbican

puppet-barbican switched to www_authenticate_uri in
[1], update puppet-openstack-integration for the same.

[1] https://review.openstack.org/#/c/558452/

Change-Id: I52b7c6a265a23cf1a724a24e9bb7e6a6c4f32b90

openstack/puppet-openstack-integration,openstack/puppet-openstack-integration,openstack/puppet-openstack-integration