Set attributes for instance in one place

        :param kwargs: dict -- dictionary of keyword arguments

def _set_attributes(self, **kwargs):
        '''Set attributes for instance in one place

        :param kwargs: dict -- dictionary of keyword arguments
        '''

        self.devices = kwargs['devices'][:]
        self.partition = kwargs['partition']
        self.device_group_name = 'device_trust_group'
        self.device_group_type = 'sync-only'