HIVE-4675 Create new parallel unit test environment (Brock Noland via egc)

Submitted by: Brock Noland	
Reviewed by: Edward Capriolo	


git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1504759 13f79535-47bb-0310-9956-ffa450edef68
Merge remote branch 'origin/trunk' into trunk-gd