Return the log tag for the alert.

def get_limit_log(self, stat_name, default_action=False):
        """Return the log tag for the alert."""
        # Get the log tag for stat + header
        # Exemple: network_wlan0_rx_log
        try:
            log_tag = self._limits[stat_name + '_log']
        except KeyError:
            # Try fallback to plugin default log
            # Exemple: network_log
            try:
                log_tag = self._limits[self.plugin_name + '_log']
            except KeyError:
                # By defaukt, log are disabled
                return default_action

        # Return the action list
        return log_tag[0].lower() == 'true'