make kubectl replace generic

pkg/kubectl/cmd/replace.go

@@ -124,8 +124,11 @@ func RunReplace(f cmdutil.Factory, out io.Writer, cmd *cobra.Command, args []str
 		return fmt.Errorf("--timeout must have --force specified")
 	}
 
-	mapper, typer := f.Object()
-	r := resource.NewBuilder(mapper, typer, resource.ClientMapperFunc(f.ClientForMapping), f.Decoder(true)).
+	mapper, typer, err := f.UnstructuredObject()
+	if err != nil {
+		return err
+	}
+	r := resource.NewBuilder(mapper, typer, resource.ClientMapperFunc(f.UnstructuredClientForMapping), runtime.UnstructuredJSONScheme).
 		Schema(schema).
 		ContinueOnError().
 		NamespaceParam(cmdNamespace).DefaultNamespace().