Merge pull request #5770 from aledbf/webhook

Use admissionregistration.k8s.io/v1beta1 to be k8s < 1.16 compatible

Author: k8s-ci-robot

charts/ingress-nginx/Chart.yaml

@@ -1,6 +1,6 @@
 apiVersion: v1
 name: ingress-nginx
-version: 2.7.1
+version: 2.8.0
 appVersion: 0.33.0
 home: https://github.com/kubernetes/ingress-nginx
 description: Ingress controller for Kubernetes using NGINX as a reverse proxy and load balancer

charts/ingress-nginx/templates/admission-webhooks/validating-webhook.yaml

@@ -1,5 +1,7 @@
 {{- if .Values.controller.admissionWebhooks.enabled -}}
-apiVersion: admissionregistration.k8s.io/v1
+# before changing this value, check the required kubernetes version
+# https://kubernetes.io/docs/reference/access-authn-authz/extensible-admission-controllers/#prerequisites
+apiVersion: admissionregistration.k8s.io/v1beta1
 kind: ValidatingWebhookConfiguration
 metadata:
   labels: