// match a ControllerRevision.
func (dsc *DaemonSetsController) getDaemonSetsForHistory(logger klog.Logger, history *apps.ControllerRevision) []*apps.DaemonSet {
	daemonSets, err := dsc.dsLister.GetHistoryDaemonSets(history)
	if err != nil || len(daemonSets) == 0 {
		return nil
	}
	if len(daemonSets) > 1 {
		// ControllerRef will ensure we don't do anything crazy, but more than one