Consolidate domain token tests into TokenAPITests
Consolidate domain token tests into TokenAPITests

This patch moves a bunch of the domain scoped token tests from TestAuth to
TokenAPITests. It also removes duplicate tests that existed separately in each.
This is an effort to consolidate all the tests from TestAuth into TokenAPITests
so that we have a single class that enforces all of our token behaviors.

Change-Id: If868fb882bca6a4b680c35f76472a18db524ccb5

ilay09/keystone,rajalokan/keystone,openstack/keystone,rajalokan/keystone,cernops/keystone,mahak/keystone,openstack/keystone,ilay09/keystone,rajalokan/keystone,cernops/keystone,mahak/keystone,openstack/keystone,mahak/keystone,ilay09/keystone