kubeadm: Set the new BT auth group on the init token

cmd/kubeadm/app/cmd/init.go

@@ -375,7 +375,7 @@ func (i *Init) Run(out io.Writer) error {
 
 	// Create the default node bootstrap token
 	tokenDescription := "The default bootstrap token generated by 'kubeadm init'."
-	if err := nodebootstraptokenphase.UpdateOrCreateToken(client, i.cfg.Token, false, i.cfg.TokenTTL.Duration, kubeadmconstants.DefaultTokenUsages, []string{}, tokenDescription); err != nil {
+	if err := nodebootstraptokenphase.UpdateOrCreateToken(client, i.cfg.Token, false, i.cfg.TokenTTL.Duration, kubeadmconstants.DefaultTokenUsages, []string{kubeadmconstants.V18NodeBootstrapTokenAuthGroup}, tokenDescription); err != nil {
 		return err
 	}
 	// Create RBAC rules that makes the bootstrap tokens able to post CSRs