Fix validation by moving it into the resource builder.

Also always print an error for unknown field.

pkg/kubectl/cmd/create.go

@@ -79,6 +79,7 @@ func RunCreate(f *cmdutil.Factory, out io.Writer, filenames util.StringList) err
 
 	mapper, typer := f.Object()
 	r := resource.NewBuilder(mapper, typer, f.ClientMapperForCommand()).
+		Schema(schema).
 		ContinueOnError().
 		NamespaceParam(cmdNamespace).RequireNamespace().
 		FilenameParam(filenames...).
@@ -95,9 +96,6 @@ func RunCreate(f *cmdutil.Factory, out io.Writer, filenames util.StringList) err
 		if err != nil {
 			return err
 		}
-		if err := schema.ValidateBytes(data); err != nil {
-			return err
-		}
 		obj, err := resource.NewHelper(info.Client, info.Mapping).Create(info.Namespace, true, data)
 		if err != nil {
 			return err