Show the contents of the config file.

def show(all_keys):
    """Show the contents of the config file."""
    if not config_file_exists():
        echo_info('No config file found! Please try `ddev config restore`.')
    else:
        if all_keys:
            echo_info(read_config_file().rstrip())
        else:
            echo_info(read_config_file_scrubbed().rstrip())