maxinjian 0c5ce21ba5 Add CeilometerAlarms.create_and_get_alarm
Create and get the newly created alarm.

These scenarios test GET /v2/alarms/(alarm_id)
Initially alarm is created and then its detailed information is
fetched using its alarm_id.

Change-Id: I3320df227bd963890e4be8765569dbd82329ff4d
2016-11-07 23:52:50 -05:00
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