_get_device_names_in_group

        :returns: list -- list of device names in group

def _get_device_names_in_group(self):
        '''_get_device_names_in_group

        :returns: list -- list of device names in group
        '''

        device_names = []
        dg = pollster(self._get_device_group)(self.devices[0])
        members = dg.devices_s.get_collection()
        for member in members:
            member_name = member.name.replace('/%s/' % self.partition, '')
            device_names.append(member_name)
        return device_names