message: Updating swagger to include HTTP 2 APNS parameters
diff: "thumbprint": {
  "type": "string",
  "description": "The Apns certificate Thumbprint"
  + },
  + "keyId": {
  + "type": "string",
  + "description": "A 10-character key identifier (kid) key, obtained from your developer account"
  + },
  + "appName": {
  + "type": "string",
  + "description": "The name of the application"
  + },
  + "appId": {
  + "type": "string",
  + "description": "The issuer (iss) registered claim key, whose value is your 10-character Team ID, obtained from your developer account"
  + },
  + "token": {
  + "type": "string",
  + "description": "Provider Authentication Token, obtained through your developer account"
  }
  },
  "description": "Description of a NotificationHub ApnsCredential."
  