Update k8s dependency version to 1.21

go.mod

@@ -5,7 +5,6 @@ go 1.16
 require (
 	github.com/container-storage-interface/spec v1.3.0
 	github.com/fsnotify/fsnotify v1.4.9
-	github.com/go-logr/logr v0.3.0 // indirect
 	github.com/golang/mock v1.4.4
 	github.com/golang/protobuf v1.4.3
 	github.com/google/go-cmp v0.5.4 // indirect
@@ -20,52 +19,46 @@ require (
 	github.com/prometheus/client_model v0.2.0
 	github.com/prometheus/common v0.15.0
 	github.com/spf13/cobra v1.1.1
-	golang.org/x/crypto v0.0.0-20201208171446-5f87f3452ae9 // indirect
-	golang.org/x/net v0.0.0-20201209123823-ac852fbbde11 // indirect
 	golang.org/x/oauth2 v0.0.0-20201208152858-08078c50e5b5 // indirect
-	golang.org/x/sys v0.0.0-20201214095126-aec9a390925b // indirect
-	golang.org/x/term v0.0.0-20201210144234-2321bbc49cbf // indirect
-	golang.org/x/time v0.0.0-20201208040808-7e3f01d25324 // indirect
 	google.golang.org/appengine v1.6.7 // indirect
 	google.golang.org/genproto v0.0.0-20201211151036-40ec1c210f7a // indirect
 	google.golang.org/grpc v1.34.0
-	gopkg.in/yaml.v2 v2.4.0 // indirect
-	k8s.io/api v0.20.0
-	k8s.io/apimachinery v0.20.0
-	k8s.io/client-go v1.20.0
-	k8s.io/component-base v0.20.0
-	k8s.io/klog/v2 v2.4.0
-	k8s.io/kubernetes v1.20.0
+	k8s.io/api v0.21.0
+	k8s.io/apimachinery v0.21.0
+	k8s.io/client-go v0.21.0
+	k8s.io/component-base v0.21.0
+	k8s.io/klog/v2 v2.8.0
+	k8s.io/kubernetes v1.21.0
 )
 
 replace (
 	github.com/kubernetes-csi/external-snapshotter/client/v4 => ./client
-	k8s.io/api => k8s.io/api v0.20.0
-	k8s.io/apiextensions-apiserver => k8s.io/apiextensions-apiserver v0.20.0
-	k8s.io/apimachinery => k8s.io/apimachinery v0.20.0
-	k8s.io/apiserver => k8s.io/apiserver v0.20.0
-	k8s.io/cli-runtime => k8s.io/cli-runtime v0.20.0
-	k8s.io/client-go => k8s.io/client-go v0.20.0
-	k8s.io/cloud-provider => k8s.io/cloud-provider v0.20.0
-	k8s.io/cluster-bootstrap => k8s.io/cluster-bootstrap v0.20.0
-	k8s.io/code-generator => k8s.io/code-generator v0.20.0
-	k8s.io/component-base => k8s.io/component-base v0.20.0
-	k8s.io/component-helpers => k8s.io/component-helpers v0.20.0
-	k8s.io/controller-manager => k8s.io/controller-manager v0.20.0
-	k8s.io/cri-api => k8s.io/cri-api v0.20.0
-	k8s.io/csi-translation-lib => k8s.io/csi-translation-lib v0.20.0
-	k8s.io/kube-aggregator => k8s.io/kube-aggregator v0.20.0
-	k8s.io/kube-controller-manager => k8s.io/kube-controller-manager v0.20.0
-	k8s.io/kube-proxy => k8s.io/kube-proxy v0.20.0
-	k8s.io/kube-scheduler => k8s.io/kube-scheduler v0.20.0
-	k8s.io/kubectl => k8s.io/kubectl v0.20.0
-	k8s.io/kubelet => k8s.io/kubelet v0.20.0
-	k8s.io/legacy-cloud-providers => k8s.io/legacy-cloud-providers v0.20.0
-	k8s.io/metrics => k8s.io/metrics v0.20.0
-	k8s.io/mount-utils => k8s.io/mount-utils v0.20.0
-	k8s.io/sample-apiserver => k8s.io/sample-apiserver v0.20.0
+	k8s.io/api => k8s.io/api v0.21.0
+	k8s.io/apiextensions-apiserver => k8s.io/apiextensions-apiserver v0.21.0
+	k8s.io/apimachinery => k8s.io/apimachinery v0.21.0
+	k8s.io/apiserver => k8s.io/apiserver v0.21.0
+	k8s.io/cli-runtime => k8s.io/cli-runtime v0.21.0
+	k8s.io/client-go => k8s.io/client-go v0.21.0
+	k8s.io/cloud-provider => k8s.io/cloud-provider v0.21.0
+	k8s.io/cluster-bootstrap => k8s.io/cluster-bootstrap v0.21.0
+	k8s.io/code-generator => k8s.io/code-generator v0.21.0
+	k8s.io/component-base => k8s.io/component-base v0.21.0
+	k8s.io/component-helpers => k8s.io/component-helpers v0.21.0
+	k8s.io/controller-manager => k8s.io/controller-manager v0.21.0
+	k8s.io/cri-api => k8s.io/cri-api v0.21.0
+	k8s.io/csi-translation-lib => k8s.io/csi-translation-lib v0.21.0
+	k8s.io/kube-aggregator => k8s.io/kube-aggregator v0.21.0
+	k8s.io/kube-controller-manager => k8s.io/kube-controller-manager v0.21.0
+	k8s.io/kube-proxy => k8s.io/kube-proxy v0.21.0
+	k8s.io/kube-scheduler => k8s.io/kube-scheduler v0.21.0
+	k8s.io/kubectl => k8s.io/kubectl v0.21.0
+	k8s.io/kubelet => k8s.io/kubelet v0.21.0
+	k8s.io/legacy-cloud-providers => k8s.io/legacy-cloud-providers v0.21.0
+	k8s.io/metrics => k8s.io/metrics v0.21.0
+	k8s.io/mount-utils => k8s.io/mount-utils v0.21.0
+	k8s.io/sample-apiserver => k8s.io/sample-apiserver v0.21.0
 )
 
-replace k8s.io/sample-cli-plugin => k8s.io/sample-cli-plugin v0.20.0
+replace k8s.io/sample-cli-plugin => k8s.io/sample-cli-plugin v0.21.0
 
-replace k8s.io/sample-controller => k8s.io/sample-controller v0.20.0
+replace k8s.io/sample-controller => k8s.io/sample-controller v0.21.0