Original issue: tendermint/tendermint#9538

Summary

When execution is interrupted with CTRL+C, Tendermint outputs a long list of messages, clogging the output and making it hard to find useful messages or removing them entirely from the scrollback. Users have reported loosing a lot of time simply scrolling back while running testnets.

Redirecting the status messages from Tendermint to a log would preserve relevant information but still keep the output clean.

Implementation details

• Determine what are the messages that are output when Tendermint is shutting down and filter out the ones that provide little information.
• Output those messages to a separate log file.