AMBARI-2273. Display "Hive" rather than "Hive/HCat" as the service display name. (Oleg Nechiporenko via yusaku)

git-svn-id: https://svn.apache.org/repos/asf/incubator/ambari/trunk@1489532 13f79535-47bb-0310-9956-ffa450edef68