Handle the ErrNoLeader case and apply slower retries. Also when we have
missed the heartbeat retry aggressively, backing off after we have
missed for more than 30 seconds.

Improve handling of Vault errors

Fix flaky deadline tests

Support custom Consul config for TestServer

Adds a Consul field to the TestServerConfig that allows passing in non-default values for e.g. consul address.
This will allow the TestServer to integrate with Consul's testutil/TestServer.

Correctly handle the upgrade path of a node being drained when applying Raft logs

Add name variable to AWS Terraform configs

Initial Node drain docs

Check for nil for RPC listener; prevent double closing of listener channel 

cli: remove info color on monitored output

drain: add timestamps to cli output