allow kubectl cmd to process dirs recursively

reqs:
    - the kubectl cmd must support the -f | --filename flag
    - the kubectl cmd must support visiting a dir one level deep,
    or using more than one resource

pkg/kubectl/cmd/expose.go

@@ -34,6 +34,7 @@ import (
 // referencing the cmd.Flags()
 type ExposeOptions struct {
 	Filenames []string
+	Recursive bool
 }
 
 const (
@@ -102,6 +103,7 @@ func NewCmdExposeService(f *cmdutil.Factory, out io.Writer) *cobra.Command {
 
 	usage := "Filename, directory, or URL to a file identifying the resource to expose a service"
 	kubectl.AddJsonFilenameFlag(cmd, &options.Filenames, usage)
+	cmdutil.AddRecursiveFlag(cmd, &options.Recursive)
 	cmdutil.AddApplyAnnotationFlags(cmd)
 	cmdutil.AddRecordFlag(cmd)
 	return cmd
@@ -117,7 +119,7 @@ func RunExpose(f *cmdutil.Factory, out io.Writer, cmd *cobra.Command, args []str
 	r := resource.NewBuilder(mapper, typer, resource.ClientMapperFunc(f.ClientForMapping), f.Decoder(true)).
 		ContinueOnError().
 		NamespaceParam(namespace).DefaultNamespace().
-		FilenameParam(enforceNamespace, options.Filenames...).
+		FilenameParam(enforceNamespace, options.Recursive, options.Filenames...).
 		ResourceTypeOrNameArgs(false, args...).
 		Flatten().
 		Do()