Use new codegen config options in kazel and fix boilerplate check for generated bzl

build/root/.kazelcfg.json

@@ -6,5 +6,9 @@
 		"^third_party/etcd.*"
 	],
 	"AddSourcesRules": true,
-	"K8sOpenAPIGen": true
+	"K8sCodegenBzlFile": "build/kazel_generated.bzl",
+	"K8sCodegenBoilerplateFile": "hack/boilerplate/boilerplate.generatebzl.txt",
+	"K8sCodegenTags": [
+		"openapi-gen"
+	]
 }

hack/boilerplate/boilerplate.generatebzl.txt

@@ -0,0 +1,14 @@
+# Copyright 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.
+

hack/boilerplate/boilerplate.py

@@ -83,10 +83,12 @@ def file_passes(filename, refs, regexs):
     generated = is_generated_file(filename, data, regexs)
 
     basename = os.path.basename(filename)
+    extension = file_extension(filename)
     if generated:
-        extension = "generatego"
-    else:
-        extension = file_extension(filename)
+        if extension == "go":
+            extension = "generatego"
+        elif extension == "bzl":
+            extension = "generatebzl"
 
     if extension != "":
         ref = refs[extension]