func checkKubeadmExpectations(cfg *Config) error {
	if len(cfg.Clusters) != 1 {
		return errors.Errorf("kubeadm KUBECONFIG should have one cluster, but read %d", len(cfg.Clusters))
	}
	if len(cfg.Users) != 1 {
		return errors.Errorf("kubeadm KUBECONFIG should have one user, but read %d", len(cfg.Users))
	}
	if len(cfg.Contexts) != 1 {
		return errors.Errorf("kubeadm KUBECONFIG should have one context, but read %d", len(cfg.Contexts))
	}
	return nil
}
checkKubeadmExpectations validates that a kubeadm created KUBECONFIG meets
our expectations, namely on the number of entries
package kubeconfig
import (
	"sigs.k8s.io/kind/pkg/errors"
)
func KINDClusterKey(clusterName string) string {
	return "kind-" + clusterName
}