Reload the device.

        CSM_DUT#reload

        System configuration has been modified. Save? [yes/no]: yes
        Building configuration...
        [OK]
        Proceed with reload? [confirm]

def reload(self, reload_timeout=300, save_config=True):
        """Reload the device.

        CSM_DUT#reload

        System configuration has been modified. Save? [yes/no]: yes
        Building configuration...
        [OK]
        Proceed with reload? [confirm]
        """
        response = "yes" if save_config else "no"

        events = [SAVE_CONFIG, PROCEED, pexpect.TIMEOUT, pexpect.EOF]

        transitions = [
            (SAVE_CONFIG, [0], 1, partial(a_send_line, response), 60),
            (PROCEED, [0, 1], 2, partial(a_send, "\r"), reload_timeout),
            # if timeout try to send the reload command again
            (pexpect.TIMEOUT, [0], 0, partial(a_send_line, self.reload_cmd), 10),
            (pexpect.TIMEOUT, [2], -1, a_reconnect, 0),
            (pexpect.EOF, [0, 1, 2], -1, a_disconnect, 0)
        ]
        fsm = FSM("IOS-RELOAD", self.device, events, transitions, timeout=10, max_transitions=5)
        return fsm.run()