FEATURE/MINOR: kubernetes-ingress: allow setting loadBalancerClass for the service (#226)

* allow setting loadBalancerClass for the service

Author: aep

kubernetes-ingress/templates/controller-service.yaml

@@ -119,5 +119,8 @@ spec:
   loadBalancerSourceRanges:
 {{ toYaml .Values.controller.service.loadBalancerSourceRanges | indent 4 }}
 {{- end }}
+{{- if .Values.controller.service.loadBalancerClass}}
+  loadBalancerClass: "{{ .Values.controller.service.loadBalancerClass }}"
+{{- end }}
 {{- end }}
 {{- end }}

kubernetes-ingress/values.yaml

@@ -434,6 +434,10 @@ controller:
     # ref: https://kubernetes.io/docs/tasks/access-application-cluster/configure-cloud-provider-firewall/
     loadBalancerSourceRanges: []
 
+    ## Class of load balancer implementation 
+    ## ref: https://kubernetes.io/docs/concepts/services-networking/service/#load-balancer-class
+    loadBalancerClass: nil
+
     ## Service ClusterIP
     ## ref: https://kubernetes.io/docs/concepts/services-networking/service/
     # clusterIP: ""