Re-bootstrap if not enough peers for all handlers

[alexdovzhanyn]

When a node first starts, it has no peers it can connect to, because it knows of no IPs on the network. It will ping the bootstrap server (peer registry) to receive a list of IP addresses it can connect to within the network. It then attempts to connect to each of those IP addresses, and saves each one with which it can create a successful connection.

The number of peers it successfully connects to may be lower than the number of handlers the node has available. If this is the case, the node should hit the bootstrap server again the next time it is started, and attempt to find additional peers.