[Cpuchain-dev] Peer Discovery: dns seeds and fallback hardcoded nodes

As far as I know, everything that is needed is just adding server IP's or hostnames, so it could be added at any time and there should be no major problem with that. Also, some of such settings could be added just to the config file, so for some changes no software update is needed at all. More than that: nodes could be added or removed from the command line.