Describe the bug
Sqoop task params : --map-column-hive & --map-column-java params set error,
if set multi-params only the last param effect

To Reproduce

1. In Sqoop task set two hive-map fields like， item_id String, parent_id String
2. worker log show that only --map-column-hive parent_id=String, not --map-column-hive item_id=String, parent_id=String

Expected behavior
--map-column-hive & --map-column-java params set success

Which version of Dolphin Scheduler:
-[dev-1.3.0]

Requirement or improvement

• Modify sqoop-MysqlSourceGenerator