Init the connection to the Statsd server.

def init(self):
        """Init the connection to the Statsd server."""
        if not self.export_enable:
            return None
        logger.info(
            "Stats will be exported to StatsD server: {}:{}".format(self.host,
                                                                    self.port))
        return StatsClient(self.host,
                           int(self.port),
                           prefix=self.prefix)