Send a payload to exchange to containing command and payload to the queue specified in config.
        :param command: str: name of the command we want run by WorkQueueProcessor
        :param payload: str: string data that will be put into the exchange's message body
        :return Bool: True when delivery confirmed

def send(self, payload):
        """
        Send a payload to exchange to containing command and payload to the queue specified in config.
        :param command: str: name of the command we want run by WorkQueueProcessor
        :param payload: str: string data that will be put into the exchange's message body
        :return Bool: True when delivery confirmed
        """
        result = self.connection.send_durable_exchange_message(self.exchange_name, payload)
        logging.info("Sent message to exchange.".format(self.exchange_name))
        return result