TAJO-1246: HBase info port conflict occasionally causes unit test failures in Jenkins CI.

Closes #300
Merge branch 'master' of http://git-wip-us.apache.org/repos/asf/tajo into index_support
Merge branch 'index_support' of http://git-wip-us.apache.org/repos/asf/tajo into TAJO-838_3
Merge branch 'TAJO-838_3' of github.com:jihoonson/tajo-2 into TAJO-838_3