Rotate the motors according to the provided ``steering`` for ``seconds``.

def on_for_seconds(self, steering, speed, seconds, brake=True, block=True):
        """
        Rotate the motors according to the provided ``steering`` for ``seconds``.
        """
        (left_speed, right_speed) = self.get_speed_steering(steering, speed)
        MoveTank.on_for_seconds(self, SpeedNativeUnits(left_speed), SpeedNativeUnits(right_speed), seconds, brake, block)