Fix usage of deprecated webhook.Validator interface

Replace usage of deprecated `webhook.Validator` interface with
`admission.CustomValidator`.

Signed-off-by: Saeid Askari <saskari@redhat.com>

Author: sudomakeinstall2

api/v1/policy_webhook.go

@@ -4,6 +4,7 @@
 package v1
 
 import (
+	"context"
 	"encoding/json"
 	"errors"
 	"fmt"
@@ -34,10 +35,10 @@ func (r *Policy) SetupWebhookWithManager(mgr ctrl.Manager) error {
 
 //+kubebuilder:webhook:path=/validate-policy-open-cluster-management-io-v1-policy,mutating=false,failurePolicy=Ignore,sideEffects=None,groups=policy.open-cluster-management.io,resources=policies,verbs=create,versions=v1,name=policy.open-cluster-management.io.webhook,admissionReviewVersions=v1
 
-var _ webhook.Validator = &Policy{}
+var _ webhook.CustomValidator = &Policy{}
 
-// ValidateCreate implements webhook.Validator so a webhook will be registered for the type
-func (r *Policy) ValidateCreate() (admission.Warnings, error) {
+// ValidateCreate implements webhook.CustomValidator so a webhook will be registered for the type
+func (r *Policy) ValidateCreate(_ context.Context, _ runtime.Object) (admission.Warnings, error) {
 	log := policylog.WithValues("policyName", r.Name, "policyNamespace", r.Namespace)
 	log.V(1).Info("Validate policy creation request")
 
@@ -54,8 +55,8 @@ func (r *Policy) ValidateCreate() (admission.Warnings, error) {
 	return nil, nil
 }
 
-// ValidateUpdate implements webhook.Validator so a webhook will be registered for the type
-func (r *Policy) ValidateUpdate(_ runtime.Object) (admission.Warnings, error) {
+// ValidateUpdate implements webhook.CustomValidator so a webhook will be registered for the type
+func (r *Policy) ValidateUpdate(_ context.Context, _, _ runtime.Object) (admission.Warnings, error) {
 	log := policylog.WithValues("policyName", r.Name, "policyNamespace", r.Namespace)
 	log.V(1).Info("Validate policy update request")
 
@@ -67,8 +68,8 @@ func (r *Policy) ValidateUpdate(_ runtime.Object) (admission.Warnings, error) {
 	return nil, nil
 }
 
-// ValidateDelete implements webhook.Validator so a webhook will be registered for the type
-func (r *Policy) ValidateDelete() (admission.Warnings, error) {
+// ValidateDelete implements webhook.CustomValidator so a webhook will be registered for the type
+func (r *Policy) ValidateDelete(_ context.Context, obj runtime.Object) (admission.Warnings, error) {
 	return nil, nil
 }