Add log message when using / not using `example_status_persistence_file_path`

[dgmora]

Hello! I'm just trying flatware, and while I have configured everything, I am not 100% sure it's using the example_status_persistence_file_path. Could a log be added for the -l option so that it's explicit? Probably it works, but I think it'd be helpful for people to see it in a log message.