message: Updating validation rule M2017
diff: @@ -160,7 +160,7 @@ For example, [NetworkInterface.ipConfigurations](https://github.com/Azure/azure-
  - [ ] **M2016**: For PATCH operation, every property in the model for the request body *MUST* be optional and the property *MUST NOT* provide any default value. The absence of default values applies recursively to complex properties in the model definition.
  -- [ ] **M2017**: The model definition for the body parameter and the response *MUST* be the same for a PUT operation. This ensures that the same entity will be reusable between GET and PUT.
  +- [ ] **M2017**: A PUT operation request body schema should be the same as its 200 response schema, to allow reusing the same entity between GET and PUT. If the schema of the PUT request body is a superset of the GET response body, there must be a PATCH operation to make the resource updatable.
  - [ ] **M2018**: A parameter or a model property having an `"enum": []` constraint, *MUST* have an ["x-ms-enum"](https://github.com/Azure/azure-rest-api-specs/blob/master/documentation/swagger-extensions.md#x-ms-enum) extension and the extension's "modelAsString" property *MUST* be set to `false` where applicable.
  