[stable/nginx-ingress] Use autoscaling/v1 for hpa (#3418)

stable/nginx-ingress/Chart.yaml

@@ -1,5 +1,5 @@
 name: nginx-ingress
-version: 0.9.0
+version: 0.9.1
 appVersion: 0.10.2
 description: An nginx Ingress controller that uses ConfigMap to store the nginx configuration.
 icon: https://upload.wikimedia.org/wikipedia/commons/thumb/c/c5/Nginx_logo.svg/500px-Nginx_logo.svg.png

stable/nginx-ingress/templates/controller-hpa.yaml

@@ -1,6 +1,6 @@
 {{- if eq .Values.controller.kind "Deployment" }}
 {{- if .Values.controller.autoscaling.enabled }}
-apiVersion: autoscaling/v2beta1
+apiVersion: autoscaling/v1
 kind: HorizontalPodAutoscaler
 metadata:
   labels:
@@ -17,10 +17,6 @@ spec:
     name: {{ template "nginx-ingress.controller.fullname" . }}
   minReplicas: {{ .Values.controller.autoscaling.minReplicas }}
   maxReplicas: {{ .Values.controller.autoscaling.maxReplicas }}
-  metrics:
-  - type: Resource
-    resource:
-      name: cpu
-      targetAverageUtilization: {{ .Values.controller.autoscaling.targetAverageUtilization }}
+  targetCPUUtilizationPercentage: {{ .Values.controller.autoscaling.targetCPUUtilizationPercentage }}
 {{- end }}
 {{- end }}

stable/nginx-ingress/values.yaml

@@ -111,7 +111,7 @@ controller:
     enabled: false
   #  minReplicas: 1
   #  maxReplicas: 11
-  #  targetAverageUtilization: 50
+  #  targetCPUUtilizationPercentage: 50
 
   ## Override NGINX template
   customTemplate: