update vendor

Signed-off-by: Roland.Ma <rolandma@yunify.com>

vendor/k8s.io/apiserver/pkg/endpoints/warning/warning.go

@@ -0,0 +1,39 @@
+/*
+Copyright 2020 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 warning
+
+import (
+	restful "github.com/emicklei/go-restful"
+
+	"k8s.io/apiserver/pkg/warning"
+)
+
+// AddWarningsHandler returns a handler that adds the provided warnings to all requests,
+// then delegates to the provided handler.
+func AddWarningsHandler(handler restful.RouteFunction, warnings []string) restful.RouteFunction {
+	if len(warnings) == 0 {
+		return handler
+	}
+
+	return func(req *restful.Request, res *restful.Response) {
+		ctx := req.Request.Context()
+		for _, msg := range warnings {
+			warning.AddWarning(ctx, "", msg)
+		}
+		handler(req, res)
+	}
+}