fix(keycloak): Fix usage of headless services

It's the clusterIP field, not the type field, that has to be set to
`None`.

References:
https://kubernetes.io/docs/concepts/services-networking/service/#headless-services

charts/keycloak/README.md

 # keycloak
 
-![Version: 0.2.0](https://img.shields.io/badge/Version-0.2.0-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: 19.0.2](https://img.shields.io/badge/AppVersion-19.0.2-informational?style=flat-square)
+![Version: 0.2.1](https://img.shields.io/badge/Version-0.2.1-informational?style=flat-square) ![Type: application](https://img.shields.io/badge/Type-application-informational?style=flat-square) ![AppVersion: 19.0.2](https://img.shields.io/badge/AppVersion-19.0.2-informational?style=flat-square)
 
 (Alpha) A Helm chart for Keycloak on Kubernetes
 

charts/keycloak/templates/service.yaml

@@ -21,6 +21,11 @@ metadata:
   labels:
     {{- include "keycloak.labels" . | nindent 4 }}
 spec:
-  type: None
+  clusterIP: None
+  ports:
+    - port: {{ .Values.service.port }}
+      targetPort: http
+      protocol: TCP
+      name: http
   selector:
     {{- include "keycloak.selectorLabels" . | nindent 4 }}