Add optional attribute to specification fields
- `auxiliary-info` is specified as an optional field. - `lvcnrcheck` gives a return code of `0` if the only failing fields are option and missing. However if fields are present and fail for other reasons (for example wrong type such as `str` when it should be `int`) then the return code will be `1`.
allow-optional-fields in 1 minute and 55 seconds (queued for 3 seconds)1 job for