message: Make OSDisk in storage profile optional
diff: "description": "Specifies whether an image is zone resilient or not. Default is false. Zone resilient images can be created only in regions that provide Zone Redundant Storage (ZRS)."
  }
  },
  - "required": [
  - "osDisk"
  - ],
  "description": "Describes a storage profile."
  },
  "ImageProperties": {
  