update vendor

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

vendor/k8s.io/apimachinery/pkg/util/proxy/transport.go

@@ -30,8 +30,9 @@ import (
 
 	"golang.org/x/net/html"
 	"golang.org/x/net/html/atom"
-	"k8s.io/klog"
+	"k8s.io/klog/v2"
 
+	"k8s.io/apimachinery/pkg/api/errors"
 	"k8s.io/apimachinery/pkg/util/net"
 	"k8s.io/apimachinery/pkg/util/sets"
 )
@@ -101,15 +102,7 @@ func (t *Transport) RoundTrip(req *http.Request) (*http.Response, error) {
 	resp, err := rt.RoundTrip(req)
 
 	if err != nil {
-		message := fmt.Sprintf("Error trying to reach service: '%v'", err.Error())
-		resp = &http.Response{
-			Header:     http.Header{},
-			StatusCode: http.StatusServiceUnavailable,
-			Body:       ioutil.NopCloser(strings.NewReader(message)),
-		}
-		resp.Header.Set("Content-Type", "text/plain; charset=utf-8")
-		resp.Header.Set("X-Content-Type-Options", "nosniff")
-		return resp, nil
+		return nil, errors.NewServiceUnavailable(fmt.Sprintf("error trying to reach service: %v", err))
 	}
 
 	if redirect := resp.Header.Get("Location"); redirect != "" {