Get nodes to broadcast messages every minute

[cpurta]

Nodes should be broadcasting messages to all known peers in the network. It appears that we are not getting the known peers in the network from consuls key-value storage.

Solution proposals:

1. On start up, nodes add up to n known (random) peers to internal key-value storage
2. Fix how we are looking up the known peers from consul k-v storage and randomly pick up n peers to broadcast messages to

NOTE: We should have a peer limit set as a part of the node config via cli parameters