Return help text

def get_default_config_help(self):
        """
        Return help text
        """
        config_help = super(PassengerCollector, self).get_default_config_help()
        config_help.update({
            "bin":         "The path to the binary",
            "use_sudo":    "Use sudo?",
            "sudo_cmd":    "Path to sudo",
            "passenger_status_bin":
                           "The path to the binary passenger-status",
            "passenger_memory_stats_bin":
                           "The path to the binary passenger-memory-stats",
        })
        return config_help