Create optional serviceAnnotations value in helm chart (#2171)

* Create serviceAnnotations

* Document serviceAnnotations

* Update README.md

* Update values.yaml

Author: Jeff Wenzbauer

helm/aws-load-balancer-controller/README.md

@@ -186,6 +186,7 @@ The default values set by the application itself can be confirmed [here](https:/
 | `webhookTLS.caCert`                         | TLS CA certificate for webhook (auto-generated if not provided)                                          | ""                                                                                 |
 | `webhookTLS.cert`                           | TLS certificate for webhook (auto-generated if not provided)                                             | ""                                                                                 |
 | `webhookTLS.key`                            | TLS private key for webhook (auto-generated if not provided)                                             | ""                                                                                 |
+| `serviceAnnotations`                        | Annotations to be added to the provisioned webhook service resource                                      | `{}`                                                                               |
 | `serviceMaxConcurrentReconciles`            | Maximum number of concurrently running reconcile loops for service                                       | None                                                                               |
 | `targetgroupbindingMaxConcurrentReconciles` | Maximum number of concurrently running reconcile loops for targetGroupBinding                            | None                                                                               |
 | `targetgroupbindingMaxExponentialBackoffDelay` | Maximum duration of exponential backoff for targetGroupBinding reconcile failures                     | None                                                                               |

helm/aws-load-balancer-controller/templates/service.yaml

@@ -3,6 +3,10 @@ kind: Service
 metadata:
   name: {{ template "aws-load-balancer-controller.namePrefix" . }}-webhook-service
   namespace: {{ .Release.Namespace }}
+  {{- with .Values.serviceAnnotations }}
+  annotations:
+    {{- toYaml . | nindent 4 }}
+  {{- end }}
   labels:
 {{ include "aws-load-balancer-controller.labels" . | indent 4 }}
 spec:

helm/aws-load-balancer-controller/values.yaml

@@ -73,6 +73,9 @@ updateStrategy: {}
   #   maxSurge: 1
   #   maxUnavailable: 1
 
+# serviceAnnotations contains annotations to be added to the provisioned webhook service resource
+serviceAnnotations: {}
+
 podAnnotations: {}
 
 podLabels: {}