Acknowldge sucess or failure of a flexifunction command

                command_type              : Command acknowledged (uint16_t)
                result                    : result of acknowledge (uint16_t)

def flexifunction_command_ack_send(self, command_type, result, force_mavlink1=False):
                '''
                Acknowldge sucess or failure of a flexifunction command

                command_type              : Command acknowledged (uint16_t)
                result                    : result of acknowledge (uint16_t)

                '''
                return self.send(self.flexifunction_command_ack_encode(command_type, result), force_mavlink1=force_mavlink1)