[RATIS-293] Add an api for RaftServer to return its current GroupId

• Type: Bug
• Status: Resolved
• Priority: Major
• Resolution: Fixed
• Affects Version/s: 0.3.0
• Fix Version/s: 0.3.0
• Component/s: server
• Labels: ozone
• Target Version/s: 0.3.0
• Assignee: Mukul Kumar Singh
• Reporter: Mukul Kumar Singh
• Created: 06/Aug/18 07:04
• Updated: 06/Aug/18 19:35
• Resolved: 06/Aug/18 19:13

Description

A raft server instance return its current group ID.