Re-add version_added to include_vars (#5493)

lib/ansible/modules/utilities/logic/include_vars.py

@@ -16,6 +16,7 @@ short_description: Load variables from files, dynamically within a task.
 description:
      - Loads variables from a YAML/JSON files dynamically from within a file or
        from a directory recursively during task runtime. If loading a directory, the files are sorted alphabetically before being loaded.
+version_added: "1.4"
 options:
   file:
     version_added: "2.2"