test: upgrade test

[yaruwangway]

Summary

Add upgrade test in workflow for major release/rc-release during release process.
This test is triggered by a label "major_release", and is configured to upgrade from last major release to present version.

EDIT: create nightly build that can be passed to Hypha for testing version-specific features and simulating an upgrade from the current mainnet version

Problem Definition

Proposal

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For Admin Use

• Not duplicate issue
• Appropriate labels applied
• Appropriate contributors tagged
• Contributor assigned/self-assigned
• Is a spike necessary to map out how the issue should be approached?

[okwme]

• fix the denom KV storage issue and overwrite with correct data
• make issue on sdk about bank kv store being inconsistent between v045 and v0.46
• convert script to use cosmovisor so that the panic will actually kill gaiad running and allow the upgrade to take place
• make a new script that uses recent theta testnet genesis instead of modified genesis from scratch
• build last release as part of action CI and move to ./build/gaiad7 to run legacy node
• figure out a way to read the output automatically to determine whether the upgrade succeeded or not
  • check the liveness test logic

[MSalopek]

Closing as completed in #2328

Please favor reopening #2328 in case additional work needs to be done or there is more information.

EDIT: create nightly build that can be passed to Hypha for testing version-specific features and simulating an upgrade from the current mainnet version

Currently the relevant release/* branches and main are used.