change: no default image for node creation in local cluster where image should be copied from existing nodes

[iwilltry42]

fixes #1005

[CodingCanuck]

Could this have potentially broken the creation of tools nodes? I'm not familiar with the k3d codebase, but it looks like the NodeAddToClusterRemote() function that's now responsible for handling default images might not be called for tools node creation, which happens as part of a k3d image import command:

k3d/pkg/client/tools.go

Lines 101 to 126 in 852df77

	func importWithToolsNode(ctx context.Context, runtime runtimes.Runtime, cluster *k3d.Cluster, imagesFromRuntime []string, imagesFromTar []string, opts k3d.ImageImportOpts) error {
	// create tools node to export images
	toolsNode, err := EnsureToolsNode(ctx, runtime, cluster)
	if err != nil {
	return fmt.Errorf("failed to ensure that tools node is running: %w", err)
	}
	var importTarNames []string
	if len(imagesFromRuntime) > 0 {
	// save image to tarfile in shared volume
	l.Log().Infof("Saving %d image(s) from runtime...", len(imagesFromRuntime))
	tarName := fmt.Sprintf("%s/k3d-%s-images-%s.tar", k3d.DefaultImageVolumeMountPath, cluster.Name, time.Now().Format("20060102150405"))
	if err := runtime.ExecInNode(ctx, toolsNode, append([]string{"./k3d-tools", "save-image", "-d", tarName}, imagesFromRuntime...)); err != nil {
	return fmt.Errorf("failed to save image(s) in tools container for cluster '%s': %w", cluster.Name, err)
	}
	importTarNames = append(importTarNames, tarName)
	}
	if len(imagesFromTar) > 0 {
	// copy tarfiles to shared volume
	l.Log().Infof("Saving %d tarball(s) to shared image volume...", len(imagesFromTar))
	for _, file := range imagesFromTar {
	tarName := fmt.Sprintf("%s/k3d-%s-images-%s-file-%s", k3d.DefaultImageVolumeMountPath, cluster.Name, time.Now().Format("20060102150405"), path.Base(file))
	if err := runtime.CopyToNode(ctx, file, tarName, toolsNode); err != nil {
	l.Log().Errorf("failed to copy image tar '%s' to tools node! Error below:\n%+v", file, err)

(though I might not be tracing this correctly!)

See error I'm hitting with 5.4.1: #954 (comment)