contrib/storage-splunk/src/main/resources/bootstrap-storage-plugins.json

{
  "storage":{
    "splunk" : {
      "type":"splunk",
      "username": "admin",
      "password": "changeme",
      "hostname": "localhost",
      "port": 8089,
      "earliestTime": "-14d",
      "latestTime": "now",
      "enabled": false
    }
  }
}