Log any CLI command that's run in a way that can be easily copy-pasted from the task log. This can help a lot in determining whether an issue is caused by Flamenco or by the CLI program itself.
Remove double logging of 'command exited succesfully' message.
cli
exec
The `cli` word, to me, implies too much that it's run via a shell, which it isn't. Renaming to `exec` resolves that.