Command line option for providing peering info for running a multi host cluster

[tolbertam]

There should be a command line option like --peers that if provided, launches a single node endpoint that provides peering information for all IP addresses passed in peers that aren't an interface the host provides. For example:

java -jar simulacron.jar --peers 1.1.1.1,2.2.2.2,3.3.3.3,4.4.4.4

If run on a machine that has the ip 2.2.2.2, simulacron will run a single node that binds on 2.2.2.2 and returns peering information for 1.1.1.1,3.3.3.3,4.4.4.4.

This would enable a user to launch simulacron in this way on multiple hosts, and when a driver connects as far as it knows those hosts form a cluster and attempts to maintain connectivity to all of those hosts.