Chart Is Not Compliant with the K8s Standard Hostpath Provisioner

```
dataStorage:
enabled: true
```

Causes:

```
/ # vault operator init
Error initializing: Error making API request.

URL: PUT http://127.0.0.1:8200/v1/sys/init
Code: 400. Errors:

* failed to initialize barrier: failed to persist keyring: mkdir /vault/data/core: permission denied
```

The chart expects a non-default Hostpath provisioner to be used - for ex., `AWS EBS`.