KYLIN-3559 Use Splitter for splitting String

[whuwb]

Issue: https://issues.apache.org/jira/browse/KYLIN-3559

Solution: Use Splitter for splitting String

IT:

[INFO] Reactor Summary for Apache Kylin 2.6.0-SNAPSHOT:
[INFO]
[INFO] Apache Kylin ....................................... SUCCESS [ 6.852 s]
[INFO] Apache Kylin - Core Common ......................... SUCCESS [ 16.358 s]
[INFO] Apache Kylin - Core Metadata ....................... SUCCESS [ 55.479 s]
[INFO] Apache Kylin - Core Dictionary ..................... SUCCESS [05:24 min]
[INFO] Apache Kylin - Core Cube ........................... SUCCESS [01:35 min]
[INFO] Apache Kylin - Core Metrics ........................ SUCCESS [ 2.747 s]
[INFO] Apache Kylin - Core Job ............................ SUCCESS [ 45.493 s]
[INFO] Apache Kylin - Core Storage ........................ SUCCESS [ 9.592 s]
[INFO] Apache Kylin - MapReduce Engine .................... SUCCESS [ 24.407 s]
[INFO] Apache Kylin - Spark Engine ........................ SUCCESS [ 8.147 s]
[INFO] Apache Kylin - Hive Source ......................... SUCCESS [ 6.442 s]
[INFO] Apache Kylin - DataSource SDK ...................... SUCCESS [ 11.310 s]
[INFO] Apache Kylin - Jdbc Source ......................... SUCCESS [ 24.863 s]
[INFO] Apache Kylin - Kafka Source ........................ SUCCESS [ 6.304 s]
[INFO] Apache Kylin - Cache ............................... SUCCESS [ 9.572 s]
[INFO] Apache Kylin - HBase Storage ....................... SUCCESS [ 19.651 s]
[INFO] Apache Kylin - Query ............................... SUCCESS [ 19.320 s]
[INFO] Apache Kylin - Metrics Reporter Hive ............... SUCCESS [ 2.167 s]
[INFO] Apache Kylin - Metrics Reporter Kafka .............. SUCCESS [ 1.122 s]
[INFO] Apache Kylin - REST Server Base .................... SUCCESS [ 27.527 s]
[INFO] Apache Kylin - REST Server ......................... SUCCESS [01:32 min]
[INFO] Apache Kylin - JDBC Driver ......................... SUCCESS [ 12.682 s]
[INFO] Apache Kylin - Assembly ............................ SUCCESS [ 20.715 s]
[INFO] Apache Kylin - Tool ................................ SUCCESS [ 14.791 s]
[INFO] Apache Kylin - Tool Assembly ....................... SUCCESS [ 5.632 s]
[INFO] Apache Kylin - Integration Test .................... SUCCESS [ 02:38 h]
[INFO] Apache Kylin - Tomcat Extension .................... SUCCESS [ 1.715 s]
[INFO] ------------------------------------------------------------------------
[INFO] BUILD SUCCESS
[INFO] ------------------------------------------------------------------------
[INFO] Total time: 02:52 h
[INFO] Finished at: 2018-11-17T22:57:50Z
[INFO] ------------------------------------------------------------------------

[asfgit]

Can one of the admins verify this patch?