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/patch.go

@@ -37,6 +37,7 @@ var patchTypes = map[string]api.PatchType{"json": api.JSONPatchType, "merge": ap
 // referencing the cmd.Flags()
 type PatchOptions struct {
 	Filenames []string
+	Recursive bool
 }
 
 const (
@@ -82,6 +83,7 @@ func NewCmdPatch(f *cmdutil.Factory, out io.Writer) *cobra.Command {
 
 	usage := "Filename, directory, or URL to a file identifying the resource to update"
 	kubectl.AddJsonFilenameFlag(cmd, &options.Filenames, usage)
+	cmdutil.AddRecursiveFlag(cmd, &options.Recursive)
 	return cmd
 }
 
@@ -114,7 +116,7 @@ func RunPatch(f *cmdutil.Factory, out io.Writer, cmd *cobra.Command, args []stri
 	r := resource.NewBuilder(mapper, typer, resource.ClientMapperFunc(f.ClientForMapping), f.Decoder(true)).
 		ContinueOnError().
 		NamespaceParam(cmdNamespace).DefaultNamespace().
-		FilenameParam(enforceNamespace, options.Filenames...).
+		FilenameParam(enforceNamespace, options.Recursive, options.Filenames...).
 		ResourceTypeOrNameArgs(false, args...).
 		Flatten().
 		Do()