prometheus service annotations for elastisearch-exporter (#3842)

* prometheus service annotations for elastisearch-exporter

* more canonical service annotation definition

stable/elasticsearch-exporter/Chart.yaml

@@ -1,7 +1,7 @@
 apiVersion: v1
 description: Elasticsearch stats exporter for Prometheus
 name: elasticsearch-exporter
-version: 0.1.1
+version: 0.1.2
 appVersion: 1.0.2
 sources:
   - https://github.com/justwatchcom/elasticsearch_exporter

stable/elasticsearch-exporter/templates/service.yaml

@@ -7,6 +7,10 @@ metadata:
     app: {{ template "elasticsearch-exporter.name" . }}
     release: "{{ .Release.Name }}"
     heritage: "{{ .Release.Service }}"
+{{- if .Values.service.annotations }}
+  annotations:
+{{ toYaml .Values.service.annotations | indent 4 }}
+{{- end }}
 spec:
   type: {{ .Values.service.type }}
   ports:

stable/elasticsearch-exporter/values.yaml

@@ -22,6 +22,7 @@ resources: {}
 service:
   type: ClusterIP
   httpPort: 9108
+  annotations: {}
 
 es:
   ## Address (host and port) of the Elasticsearch node we should connect to.