Now that buildservice jobs are able to run in a nested way, we can handle them in the same way as regular jobs, and enable users to use filelogs for them.
This is more interesting for one-offs as the pods get removed and cleaned up after some time and then the users can't find the logs anymore.
Ideally, we would have the disabled by default for buildservice images, unless explictly specified, and enabled by default on the rest (current behavior).
But allow the user to force using them.