// the collected ImageStateSummary should be equal
func checkImageStateSummary(nodes map[string]*framework.NodeInfo, imageNames ...string) bool {
	for _, imageName := range imageNames {
		var imageState *framework.ImageStateSummary
		for _, node := range nodes {
			state, ok := node.ImageStates[imageName]
			if !ok {
				continue
			}
			if imageState == nil {
				imageState = state
				continue
			}