message: API managment: make the same description for API 2016-07-07 SubscriptionIdParameter.
diff: "in": "path",
  "required": true,
  "type": "string",
  - "description": "Subscription credentials which uniquely identify the Microsoft Azure subscription. The subscription ID forms part of the URI for every service call."
  + "description": "Subscription credentials which uniquely identify Microsoft Azure subscription. The subscription ID forms part of the URI for every service call."
  },
  "ApiVersionParameter": {
  "name": "api-version",
  