HIVE-8344: Hive on Tez sets mapreduce.framework.name to yarn-tez (Gunther Hagleitner, reviewed by Vikram Dixit K)

git-svn-id: https://svn.apache.org/repos/asf/hive/branches/branch-0.14@1630253 13f79535-47bb-0310-9956-ffa450edef68