ENG-6907 Support multiple daemon instances
Merge branch 'master' of github.com:VoltDB/voltdb into notest-ENG-6907-multiple-daemons
ENG-6907 Minimize contents of voter-daemons test.
ENG-6907 Instance option not needed for non-cluster server use case
Merge pull request #1721 from VoltDB/notest-ENG-6907-multiple-daemons

ENG-6907 multiple daemons