killstragglers: identify user invoking the kill in the log, and the killed pid
ENG-5513: Add updateHashinator() to SiteProcedureConnection interface.
ENG-5513: Return a RestoreWork that can restore the hashinator (Java and EE) or
the table block from StreamSnapshotSink.poll().
Merge pull request #953 from VoltDB/ENG-5513

ENG-5513: Sync EE hashinators on rejoin