message: add type to enums to fix Linter error R3015
diff: "Failed",
  "InProgress"
  ],
  + "type": "string",
  "x-ms-enum": {
  "name": "QuotaRequestState",
  "modelAsString": true
  "shared",
  "serviceSpecific"
  ],
  + "type": "string",
  "x-ms-enum": {
  "name": "ResourceType",
  "modelAsString": true
  