Restore previous ability of cluster.start() to start partially downed clusters, idempotency if start is completed
Restore previous ability of cluster.start() to start partially downed clusters, idempotency if start is completed

mikefero/ccm,pcmanus/ccm,pcmanus/ccm,thobbs/ccm,tolbertam/ccm,mike-tr-adamson/ccm,tolbertam/ccm,pcmanus/ccm,bcantoni/ccm,bcantoni/ccm,mike-tr-adamson/ccm,mikefero/ccm,thobbs/ccm,mike-tr-adamson/ccm