'Get Domain details.
For API details, please refer to the official API reference:
http://developer.openstack.org/api-ref/identity/v3/index.html#show-domain-details'

def show_domain(self, domain_id):

    (resp, body) = self.get(('domains/%s' % domain_id))
    self.expected_success(200, resp.status)
    body = json.loads(body)
    return rest_client.ResponseBody(resp, body)
