Change targetPort for metrics service to 'metrics'

Author: bartlaarhoven

charts/docker-mailserver/templates/service.yaml

@@ -138,7 +138,7 @@ spec:
  {{- if .Values.metrics.enabled }}
  - name: metrics
  port: 9154
- targetPort: 9154 
+ targetPort: metrics 
  {{- end }}
 
  type: {{ default "ClusterIP" .Values.service.type }}