unknown field "spec.template.spec.initContainers[0].volumeMounts[5].hostPath

Hello.

This daemonset is invalid:
https://github.com/GoogleCloudPlatform/container-engine-accelerators/blob/master/nvidia-driver-installer/cos/daemonset-preloaded-latest.yaml#L106

```bash
maxpain@Maksims-MacBook-Pro-4 ~ % kubectl apply -f https://raw.githubusercontent.com/GoogleCloudPlatform/container-engine-accelerators/master/nvidia-driver-installer/cos/daemonset-preloaded-latest.yaml
Error from server (BadRequest): error when creating "https://raw.githubusercontent.com/GoogleCloudPlatform/container-engine-accelerators/master/nvidia-driver-installer/cos/daemonset-preloaded-latest.yaml": DaemonSet in version "v1" cannot be handled as a DaemonSet: strict decoding error: unknown field "spec.template.spec.initContainers[0].volumeMounts[5].hostPath"
```