Update k8s dependency version to 1.21

Signed-off-by: xinyanwu409 <wxinyan@vmware>

vendor/k8s.io/api/discovery/v1/well_known_labels.go

@@ -0,0 +1,32 @@
+/*
+Copyright 2019 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 v1
+
+const (
+	// LabelServiceName is used to indicate the name of a Kubernetes service.
+	LabelServiceName = "kubernetes.io/service-name"
+	// LabelManagedBy is used to indicate the controller or entity that manages
+	// an EndpointSlice. This label aims to enable different EndpointSlice
+	// objects to be managed by different controllers or entities within the
+	// same cluster. It is highly recommended to configure this label for all
+	// EndpointSlices.
+	LabelManagedBy = "endpointslice.kubernetes.io/managed-by"
+	// LabelSkipMirror can be set to true on an Endpoints resource to indicate
+	// that the EndpointSliceMirroring controller should not mirror this
+	// resource with EndpointSlices.
+	LabelSkipMirror = "endpointslice.kubernetes.io/skip-mirror"
+)