Allow to add annotations to router service in helm chart (#1338)

charts/fission-core/templates/svc.yaml

@@ -6,6 +6,10 @@ metadata:
     svc: router
     application: fission-router
     chart: "{{ .Chart.Name }}-{{ .Chart.Version }}"
+{{- if .Values.router.svcAnnotations }}
+  annotations:
+{{ toYaml .Values.router.svcAnnotations | indent 4 }}
+{{- end }}
 spec:
   type: {{ .Values.routerServiceType }}
   ports:

charts/fission-core/values.yaml

@@ -49,6 +49,9 @@ enableIstio: false
 router:
   svcAddressMaxRetries: 5
   svcAddressUpdateTimeout: 30s
+  ## Add annotations for router
+  # svcAnnotations:
+  #   cloud.google.com/load-balancer-type: Internal
   roundTrip:
     ## If true, router will disable the HTTP keep-alive which result in performance degradation.
     ## But it ensures that router can redirect new coming requests to new function pods.