Deleting an identity provider doesn't invalidate tokens
Deleting an identity provider doesn't invalidate tokens

This commit exposes a bug where it's possible to continue using a
federated token even after the identity provider is deleted.

Change-Id: Id19ff4f7823bdc2b078f27f9dc544f7a5ff9ea99
Partial-Bug: 1291157

mahak/keystone,openstack/keystone,mahak/keystone,openstack/keystone,openstack/keystone,mahak/keystone