message: add apiVersion check for ingress apiVersion
  Ingress apiVersion extensions/v1beta1 got deprecated and is now removed
  in 1.16.
diff: {{- if .Values.ingress.enabled -}}
  +{{- if .Capabilities.APIVersions.Has "networking.k8s.io/v1beta1" }}
  +apiVersion: networking.k8s.io/v1beta1
  +{{ else }}
  apiVersion: extensions/v1beta1
  +{{ end -}}
  kind: Ingress
  metadata:
  name: {{ template "kubeapps.fullname" . }}
  