Bump Chronograf (#3187)

stable/chronograf/Chart.yaml

 name: chronograf
-version: 0.3.0
+version: 0.4.0
 description: Open-source web application written in Go and React.js that provides
   the tools to visualize your monitoring data and easily create alerting and automation
   rules.

stable/chronograf/values.yaml

 ## Image Settings
 ##
 image:
-  repository: "quay.io/influxdb/chronograf"
-  tag: "latest"
+  repository: "docker.io/chronograf"
+  tag: "1.3-alpine"
   pullPolicy: "Always"
 
 ## Specify a service type
@@ -38,11 +38,11 @@ resources:
   limits:
     memory: 2Gi
     cpu: 2
-    
+
 ## Configure the ingress object to hook into existing infastructure
 ## ref : http://kubernetes.io/docs/user-guide/ingress/
-## OPTIONALLY you can set .Values.ingress.secretName to set which secret to use    
-## 
+## OPTIONALLY you can set .Values.ingress.secretName to set which secret to use
+##
 ingress:
   enabled: false
   tls: false
@@ -70,7 +70,8 @@ oauth:
     enabled: false
     client_id: CHANGE_ME
     client_secret: CHANGE_ME
-    public_url: "" # eg. http://chronograf.foobar.com
+    # eg. http://chronograf.foobar.com
+    public_url: ""
     # This is a comma seperated list of Google Apps domains (OPTIONAL)
     google_domains: ""
   heroku: