Command logs

[godrei]

Checklist

• I've read and followed the Contribution Guidelines
• README.md is updated with the changes (if needed)

Version

Requires a PATCH version update

Context

This PR fixes a bug with structured logging: before Bitrise CLI installs an apt-get package, an apt-get update command is executed, which was writing to the os.Stdout directly. This resulted in a raw log, even if structured logging was enabled (--output-format json)

Changes

• Hide the apt-get update command output as long as the command succeeds, return the output as part of the returned error otherwise
• Stop CheckProgramInstalledPath to print to os.Stderr
• Typo fix: longer -> logger

Investigation details

I was searching for os.Stdout and os.Stderr in the codebase to find all the occurrences where we write directly to the standard output.