HiveServer2 put username in job name when doAs=false (for viewing in RM otherwise all jobs show as 'hive')

When using HiveServer2 with SQLStdAuthorizer and doAs=false please put the username in the HIVE-<hash> job submission so that we can see which user submitted which job in the RM queues as all the jobs just show as 'hive' user (this is running on Tez, so the query isn't shown in the name column making differentiating queries/job difficult).