For ENG-5464, add elastic settings to deployment file and allow them to be updated
For ENG-5464, process elastic config in catalog at startup
Merge branch 'master' into ENG-5464
For ENG-5464, allow catalog updates that only change elastic settings to occur during elastic rebalance
Merge pull request #1121 from VoltDB/ENG-5464

Eng 5464 Allow tuning of elastic throughput and latency