Export the stats to the Statsd server.

def export(self, name, columns, points):
        """Export the stats to the Statsd server."""
        for i in range(len(columns)):
            if not isinstance(points[i], Number):
                continue
            stat_name = '{}.{}'.format(name, columns[i])
            stat_value = points[i]
            try:
                self.client.gauge(normalize(stat_name),
                                  stat_value)
            except Exception as e:
                logger.error("Can not export stats to Statsd (%s)" % e)
        logger.debug("Export {} stats to Statsd".format(name))