[Docker] Create volume request

[joshuachp]

Create the structure to receive the CreateVolumeRequest and publish the AvailableVolumes property.

Interfaces

Create Volume Request

{
  "interface_name": "io.edgehog.devicemanager.apps.CreateVolumeRequest",
  "version_major": 0,
  "version_minor": 1,
  "type": "datastream",
  "ownership": "server",
  "aggregation": "object",
  "mappings": [
    {
      "endpoint": "/volume/id",
      "type": "string"
    },
    {
      "endpoint": "/volume/driver",
      "type": "string"
    },
    {
      "endpoint": "/volume/options",
      "type": "stringarray",
      "doc": "An array of key=value options to set for the drive"
    }
  ]
}

Available Volumes

{
  "interface_name": "io.edgehog.devicemanager.apps.AvailableVolumes",
  "version_major": 0,
  "version_minor": 1,
  "type": "properties",
  "ownership": "device",
  "mappings": [
    {
      "allow_unset": true,
      "endpoint": "/%{volume_id}/created",
      "type": "boolean"
    },
    {
      "allow_unset": true,
      "endpoint": "/%{volume_id}/driver",
      "type": "string"
    },
    {
      "allow_unset": true,
      "endpoint": "/%{volume_id}/options",
      "type": "stringarray",
      "doc": "An array of key=value options to set for the drive"
    }
  ]
}