Downloading them at runtime proved too slow and unreliable. Keep the logic to upload the vectors to S3 as it's faster, the build job takes around 5-10 minutes when downloading from S3, but 30+ minutes to using Fluster to download the vectors. Move this to the build-fluster.sh script to allow re-using it in the test-video container. Signed-off-by: Valentine Burley <valentine.burley@collabora.com> Part-of: <https://gitlab.freedesktop.org/mesa/mesa/-/merge_requests/34451>