Add config option for nginx service traffic policy

charts/mailproxy/v0.1.0/templates/nginx-service.yaml

@@ -13,5 +13,6 @@ spec:
       protocol: {{ $port.protocol }}
       name: {{ $port.name }}
   {{- end }}
+  externalTrafficPolicy: {{ .Values.nginx.service.externalTrafficPolicy }}
   selector:
     {{- include "mailproxy.nginx.selectorLabels" . | nindent 4 }}

charts/mailproxy/v0.1.0/values.yaml

@@ -9,6 +9,7 @@ nginx:
   replicaCount: 2
   service:
     type: ClusterIP
+    externalTrafficPolicy: Cluster
     ports: 
       - name: imaps
         number: 993