Werk #16210: folder_config: Prevent unintentional deletion of a non-empty folder

Prior to this Werk, the REST API could delete non-empty folders without any further check. With this Werk, the endpoint now accepts the delete_method query parameter. The possible values are: - recursive: Deletes the folder and all the elements it contains. - abort_on_nonempty: Deletes the folder only if it is not empty

If no delete_method is provided, recursive is asumed and the behaviour is the same as before this Werk.

The enpoint will return a 409 status code when trying to delete a folder that contains hosts, rules, subfolders or is referenced by another object.

Use example: curl -X 'DELETE' 'http://example.com/my_site/check_mk/api/1.0/objects/folder_config/my_folder?delete_metod=abort_on_nonempty' -H 'accept: */*

To the list of all Werks