'Gather the relevant information for update_volume_stats.'

def _gather_info(self):

    self._get_attributes_from_config()
    array_info = self.utils.parse_file_to_get_array_map(self.pool_info['config_file'])
    self.rest.set_rest_credentials(array_info)
    finalarrayinfolist = self._get_slo_workload_combinations(array_info)
    self.pool_info['arrays_info'] = finalarrayinfolist
