Ensure Tendermint v0.35 key migration is supported in Cosmos SDK, Cosmovisor and/or Gaia

[okwme]

Summary

@tychoish let me know that:

one of the things that ships in [Tendermint] 0.35 is that the format of keys in the database change, which means that operators who are running nodes that started as 0.34 will need to run a script that will rewrite all of the keys. I've written the script (in june) and we have a PR up right now to expose it as part of the tendermint CLI

Problem Definition

How do we ensure that this migration script is integrated into SDK upgrades that incorporate the new release of Tendermint? Should this be something added to Cosmosvisor? Something that could somehow interact with the chain migration scripts?

This issue is meant to discuss ways to ensure a good developer experience as this change comes down the pipeline—especially with regard to the

Proposal

Begin a discussion here and plan separate synchronous discussions as needed.

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For Admin Use

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[clevinson]

We discussed this in our architecture call last week, and have spun up a working group on cosmovisor & x/upgrade improvements.

This particular issue should be resolved by #9973

[robert-zaremba]

Closing in favor of #9973