Evaluate CDI packages to manage cdi files rather than roll out our own code

We need either to highlight the benefits of using our own CDI file manipulation code (which can be real but are not evident) or we can switch
to CDI utility packages: 
```
"tags.cncf.io/container-device-interface/pkg/cdi"
"tags.cncf.io/container-device-interface/pkg/parser"
"tags.cncf.io/container-device-interface/specs-go"
```