Fix duplicate-key pylint issue
Fix duplicate-key pylint issue

Fixed duplicate-key (warning code W0109: Duplicate key 'region_id'
in dictionary) pylint issue.

Closes-Bug: #1482585
Change-Id: Ia799e51723e70157d2124a8ec26e1a3b4772294a

mahak/keystone,openstack/keystone,maestro-hybrid-cloud/keystone,jonnary/keystone,jonnary/keystone,himanshu-setia/keystone,openstack/keystone,idjaw/keystone,mahak/keystone,rajalokan/keystone,klmitch/keystone,ajayaa/keystone,mahak/keystone,takeshineshiro/keystone,rajalokan/keystone,cernops/keystone,maestro-hybrid-cloud/keystone,klmitch/keystone,openstack/keystone,jamielennox/keystone,himanshu-setia/keystone,jamielennox/keystone,ajayaa/keystone,roopali8/keystone,roopali8/keystone,ilay09/keystone,ilay09/keystone,idjaw/keystone,dims/keystone,dstanek/keystone,ilay09/keystone,dims/keystone,takeshineshiro/keystone,dstanek/keystone,dstanek/keystone,rajalokan/keystone,cernops/keystone