Move and refactor test_by_domain_domain
Move and refactor test_by_domain_domain

This patch moves test_by_domain_domain and refactors it to test the
revocation backend instead of using a spoofed backend _matches.

Change-Id: Iec39d50c0ad075e247c2d9ddd88d72e6af2cdb86

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