Priam will check Cassandra gossip information while grabbing pre-assigned token.
Priam will check Cassandra gossip information while grabbing pre-assigned token to decide if it should start Cassandra in bootstrap mode or in replace mode. Moved token owner inferring logic based on Cassandra gossip into a util class. Refactored InstanceIdentity.init() method. Fixed DeadTokenRetriever to use the IP from token database when minimum number of instances are not reachable.