message: Add Source Web App Location
diff: "description": "ARM resource ID of the source app. App resource ID is of the form \n/subscriptions/{subId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Web/sites/{siteName} for production slots and \n/subscriptions/{subId}/resourceGroups/{resourceGroupName}/providers/Microsoft.Web/sites/{siteName}/slots/{slotName} for other slots.",
  "type": "string"
  },
  + "sourceWebAppLocation": {
  + "description": "Location of source app ex: West US or North Europe",
  + "type": "string"
  + },
  "hostingEnvironment": {
  "description": "App Service Environment.",
  "type": "string"
  