Fix verify boilerplate

Author: fabriziopandini

hack/boilerplate/boilerplate.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 # Copyright 2015 The Kubernetes Authors.
 #
@@ -150,9 +150,7 @@ def file_passes(filename, refs, regexs):
 def file_extension(filename):
     return os.path.splitext(filename)[1].split(".")[-1].lower()
 
-skipped_dirs = ['_gopath', '_output', '.git', 'cluster/env.sh',
-                "vendor", "test/e2e/generated/bindata.go", "hack/boilerplate/test",
-                "staging/src/k8s.io/kubectl/pkg/generated/bindata.go"]
+skipped_dirs = ['_output', '.git', "hack/boilerplate/test"]
 
 # list all the files contain 'DO NOT EDIT', but are not generated
 skipped_ungenerated_files = [

hack/boilerplate/boilerplate_test.py

@@ -1,4 +1,4 @@
-#!/usr/bin/env python
+#!/usr/bin/env python3
 
 # Copyright 2016 The Kubernetes Authors.
 #

hack/tools/runtime-openapi-gen/vendored_openapi.go

@@ -1,3 +1,19 @@
+/*
+Copyright 2021 The Kubernetes Authors.
+
+Licensed under the Apache License, Version 2.0 (the "License");
+you may not use this file except in compliance with the License.
+You may obtain a copy of the License at
+
+    http://www.apache.org/licenses/LICENSE-2.0
+
+Unless required by applicable law or agreed to in writing, software
+distributed under the License is distributed on an "AS IS" BASIS,
+WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
+See the License for the specific language governing permissions and
+limitations under the License.
+*/
+
 package main
 
 import (