Rudder

We want to add a manufacturer field in create node api. To do that, we want to make the format for machine that we have for node details be available for creation:

...
        "machine": {
          "id": "400c9f3f-0f6a-4e87-8db0-250a8440bd11",
          "type": "Virtual",
          "provider": "qemu",
          "manufacturer": "QEMU" 
        },
...

The semantic would be:
- if both machine and machineType are present, prefer machine which would become the default at some point
- provider and manufacturer are optionnal
- type take "physical" or "virtual"