region field in 'new_endpoint_ref' is never effective.

[Dave Chen]

we use 'region' instead of 'region_id' in EP refer for testing.
https://github.com/openstack/keystone/blob/f6c01dd1673b290578e9fff063e27104412ffeda/keystone/tests/unit/test_catalog.py#L158

But we are trying to get region_id from the reference data, so this field and any tests depend on region_id shall never take effective.
https://github.com/openstack/keystone/blob/f6c01dd1673b290578e9fff063e27104412ffeda/keystone/catalog/backends/sql.py#L317

[OpenStack Infra (hudson-openstack)]

Fix proposed to branch: master
Review: https://review.openstack.org/167534

[OpenStack Infra (hudson-openstack)]

Change abandoned by Dave Chen (<email address hidden>) on branch: master
Review: https://review.openstack.org/167534

[Dave Chen (wei-d-chen)]

Since the code base for those testcases have been updated dramatically, the issue is not applied to current code base. So mark it won't fix.