[Feature] statesync rpc_servers

[dualsystems]

Summary

Current version tendermind includes support for state sync.

Problem Definition

Long time for sync node.

Proposal

Create a list of public rpc_servers with the enabled statesync option.

---

For Admin Use

• Not duplicate issue
• Appropriate labels applied
• Appropriate contributors tagged
• Contributor assigned/self-assigned

[dualsystems]

Error: failed to start state sync: failed to set up light client state provider: at least 2 RPC servers are required, got 0

[faddat]

I like this suggestion and think that the only thing we might be able to do even better is bake seeds and RPCs into gaiad.

[tac0turtle]

This is being done as part of atlas.cosmos.network. You can follow the work here: cosmos/atlas#63

[faddat]

@dualsystems Soon as my node is synced (we should look into sync times) I will put up a state sync RPC and share info here.

It should be default behavior, because I am anticipating #704 and sync is really not fast at all, even on my 12 core / 128gb / raid 0 nvme machine.

[faddat]

I think this is completed here, and is safe to close. Also, it is now pretty easy to state sync.

#1027