Pause production when not receiving votes

[heifner]

• Updates integration tests to use producer names for finalizer descriptions to match what core system contract does and what producer_plugin now expects.

• Updated vote signal to include the active finalizer authority and/or the pending finalizer authority

  • This is not strictly necessary as the producer_plugin could track the BLS public keys of the active and pending finalizer policies and see if the those vote BLS public keys match any of the producer account names of the finalizers with the same name <=> description. I thought it was nice to signal the finalizer authority. For one thing, we can now log the finalizer description of the vote instead of just the BLS public key. However, if we think the overhead of this is too much I could pull it out and go with the producer plugin doing all the heavy lifting.

• New config option production-pause-vote-timeout-ms

  --production-pause-vote-timeout-ms arg (=6000)
                                        Received vote timeout. If no vote from
                                        producer-name finalizers or other
                                        finalizers then pauses block
                                        production. 0 disables.

Resolves #495

[ericpassmore]

Note:start
group: STABILITY
category: INTERNALS
summary: Pause block production when not receiving votes. This behavior is intended as a medium-term restriction in nodeos to help block producers be aware of common misconfigurations of their nodes that would hinder vote propagation and advancement of finality.
Note:end

[linh2931]

Not done yet. Just post comments so far.

[greg7mdp]

Not an issue, but I liked the previous version better. Here we can have negative time values and I think it is less clear.