message: Add resourceIdentifiers to securityAlertArmModel
diff: "description": "The uri link of the alert.",
  "readOnly": true,
  "type": "string"
  + },
  + "resourceIdentifiers": {
  + "description": "The list of resource identifiers of the alert.",
  + "items": {
  + "type": "object"
  + },
  + "readOnly": true,
  + "type": "array"
  }
  },
  "type": "object"
  