Question: VirtletCloudInitUserDataSource from configmap has no effect

With the following annotations, should I expect the user-data content to be written from the configmap test ?

```
VirtletCloudInitUserDataOverwrite: "true"
VirtletCloudInitImageType: configdrive
VirtletCloudInitUserDataSource: configmap/test
```

My intent is to just have the content of my config map written into the user-data file and nothing else.