API Token 인증
Liberty V2.0  : Name 을 가지고 호출해도 토큰받아옴
MItaka V3  : Name으로는 에러발생 / ID값으로 호출


# openstack user list
+----------------------------------+-----------------------------+
| ID                               | Name                        |
+----------------------------------+-----------------------------+
| 08d295bf27714cbaa974866ccea8ba97 | asg1-scaledown-ffkpdo5w4qlr |
| 0fe9d8d77b074a18815443edf1ed696a | cinder                      |
| 250792131a95490f9b3beb68abf5ff19 | asg-scaleup-jgln533sdsyi    |
| 46d5791f00bd4a63984f63920a3ee93b | nova                        |
| 5af026d563df46f387c3b6494fad9cc0 | neutron                     |
| 5cc49c35fede40d58330204c213a57b9 | aodh                        |
| 77b973ce49af4c26aece78a4db0ca2d5 | admin                       |
| 822128a23b4c4ccfa5de01314d354366 | ceilometer                  |
| c14473a2161f40e9bb2cfe03d21ba211 | asg1-scaleup-6yypko6dvlrz   |
| c8711dc4873844a095f25da43e667eeb | heat                        |
| xxxx46829bb244c58b7c0de1f2da0b57 | asg-scaledown-b36katb7unaa  |
| xxxx7fd40efd45c190a339debca9b9b9 | heat_domain_admin           |
| xxxx7a93b05342e9a0792505df497894 | jyh1                        |
| d7b96cb115c04eb7a772755efc2a0599 | glance                      |
+----------------------------------+-----------------------------+