check whether or not OpenThreadWpan is running

        Returns:
            True: OpenThreadWpan is running
            False: OpenThreadWpan is not running

def __isOpenThreadWpanRunning(self):
        """check whether or not OpenThreadWpan is running

        Returns:
            True: OpenThreadWpan is running
            False: OpenThreadWpan is not running
        """
        print 'call __isOpenThreadWpanRunning'
        if self.__stripValue(self.__sendCommand(WPANCTL_CMD + 'getprop -v NCP:State')[0]) == 'associated':
            print '*****OpenThreadWpan is running'
            return True
        else:
            print '*****Wrong OpenThreadWpan state'
            return False