Allow annotations for service. (#2306)

stable/influxdb/Chart.yaml

 name: influxdb
-version: 0.4.3
+version: 0.4.4
 description: Scalable datastore for metrics, events, and real-time analytics.
 keywords:
 - influxdb

stable/influxdb/templates/service.yaml

 apiVersion: v1
 kind: Service
 metadata:
+{{- if .Values.service.annotations }}
+  annotations:
+{{ toYaml .Values.service.annotations | indent 4 }}
+{{- end }}
   name: {{ template "fullname" . }}
   labels:
     app: {{ template "fullname" . }}

stable/influxdb/values.yaml

@@ -10,9 +10,11 @@ image:
 ## ref: http://kubernetes.io/docs/user-guide/services/
 ##
 service:
+  ## Add annotations to service
+  # annotations: {}
   type: ClusterIP
 
-## Persist data to a persitent volume
+## Persist data to a persistent volume
 ##
 persistence:
   enabled: false