message: Add directive to web apps for Java code gen
diff: @@ -392,6 +392,13 @@ namespace: com.microsoft.azure.management.appservice
  license-header: MICROSOFT_MIT_NO_CODEGEN
  payload-flattening-threshold: 1
  output-folder: $(azure-libraries-for-java-folder)/azure-mgmt-appservice
  +directive:
  + from: WebApps.json
  + where: $.definitions.MSDeploy.properties.properties
  + transform: >
  + delete $.$ref;
  + $['allOf'] = [{'$ref':'#/definitions/MSDeployCore'}];
  + return $;
  ```
  ### Java multi-api
  