HIVE-6629 : Change SET ROLE NONE to SET ROLE ALL (Brock Noland via Thejas Nair)

git-svn-id: https://svn.apache.org/repos/asf/hive/trunk@1577678 13f79535-47bb-0310-9956-ffa450edef68
thrift api change
making fields required
thrift gen files
temp fix for compile issues