clear all entries in whitelist table

        Returns:
            True: successful to clear the whitelist
            False: fail to clear the whitelist

def clearAllowList(self):
        """clear all entries in whitelist table

        Returns:
            True: successful to clear the whitelist
            False: fail to clear the whitelist
        """
        print '%s call clearAllowList' % self.port

        # remove all entries in whitelist
        try:
            print 'clearing whitelist entries:'
            for addr in self._addressfilterSet:
                print addr

            # disable whitelist
            if self.__setAddressfilterMode('disable'):
                self._addressfilterMode = 'disable'
                # clear ops
                cmd = WPANCTL_CMD + 'insert MAC:Whitelist:Entries'
                if self.__sendCommand(cmd)[0] != 'Fail':
                    self._addressfilterSet.clear()
                    return True
            return False
        except Exception, e:
            ModuleHelper.WriteIntoDebugLogger('clearAllowList() Error: ' + str(e))