v4.8.0 release

• Vlado will on on holidays for 2 weeks (from 15 Oct). He will write down the tests that he wants to run for CTA v4.8.0-0.rc3, so that another person can run them on his behalf.
• This can be integrated with the procedure that Julien wants to develop for the tests run against the pre-production instance.

Public release

• Tigran offered to test/experiment with the new public release with xrootd5. They have a test machine prepared for it. We will still release the same (minor) version RPMs with xrootd4.
• Julien will prepare the set of public repos that will make CTA-specific dependencies available to the public. TODO: Create ticket to discuss this in more detail.