Refactored config

[johnstonematt]

Config Simplification

• Instead of separately configuring inflation-reward-addresses, fee-reward-addresses, balance-addresses, and leader-slot-addresses, you now configure balance-addresses, nodekeys and comprehensive-slot-tracking.
• Vote accounts are inferred from the nodekeys using the getVoteAccounts RPC, and then we have:
  • inflation-reward-addresses -> votekeys
  • fee-reward-addresses -> nodekeys
  • balance-addresses -> votekeys + nodekeys + balance-addresses (i.e., balance-addresses is now used to configure extra accounts you want to track balances for, in addition to the configured validator accounts)
• Removed the votePubkey config option.

Label Standardisation

Previously, vote accounts were referred to under the rather generically named pubkey label, which has now been replaced with votekey. Additionally, the labels are all explicitly written as constants.

NOTE: If we move forward with this one, it will be a breaking change that will affect the way metrics are stored in Prometheus.

Other changes

• changed http_timeout flag to http-timeout
• Added default value for rpc-url (also changed rpcURI to rpc-url

[SEJeff]

😍