gitlab-ci: Update to current templates

Notable changes:

* No longer generate a separate *-built-by-job-* image tag, instead
  store the pipeline/job information as labels in the image.
* Clean up some package information files which were accidentally left
  before, possibly resulting in slightly smaller images.

Acked-by: Andres Gomez <agomez@igalia.com>
Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/4851>
1 file changed