TAJO-690: infinite loop occurs when rack task is assigning. (jinho)
TAJO-687: TajoMaster should pass tajoConf to create catalogServer. (DaeMyung Kang via jihoon)
TAJO-693: StatusUpdateTransition in QueryUnitAttempt handles TA_UPDATE incorrectly. (hyunsik)
Merge branch 'branch-0.8.0' of https://github.com/apache/tajo