[GOBBLIN-278] Fix sending lineage event for KafkaSource

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Fix Version/s: 0.12.0
• Sprint: Apache Gobblin 170905
• Assignee: Zhixiong Chen
• Reporter: Zhixiong Chen
• Created: 06/Oct/17 17:06
• Updated: 03/Jan/18 06:39
• Resolved: 10/Oct/17 16:19

Description

1. Fix lineage event for KafkaSource not send, and void resending the events by removing configurations with key prefix `gobblin.lineage` from the state
2. Fix `KafkaWorkUnitPacker` disregards existing configurations of work units