Implement an initial selection process for the Consensus Node to pick a Block Node (pick at random)

[derektriley]

This issue is to implement the initial connection to the Block Node from the Consensus Node.
Determine how we will keep track of BN connection information.

• Every CN should be configured (know about) all BN's
• Every H hours the CN picks a random BN
  -- H is rand number between H1 and H2
• If the BN is responsive, then each CN uses that BN for the remaining H hours.
• If the BN is down/unresponsive then each CN using that BN will pick another BN at random for remaining H hours.