Errors for EOS 5.2.8

After we updated to EOS 5.2.8, errors started to appear in the logs of tests:

ERROR with xrootd xattr get for file 6537, full logs in /dev/shm/a25827f4-4b52-4bef-8f17-5e74f0d90fe4/XATTRGET_6537
ERROR with xrootd xattr get for file 6543, full logs in /dev/shm/a25827f4-4b52-4bef-8f17-5e74f0d90fe4/XATTRGET_6543
ERROR with xrootd xattr get for file 6544, full logs in /dev/shm/a25827f4-4b52-4bef-8f17-5e74f0d90fe4/XATTRGET_6544
ERROR with xrootd xattr get for file 6547, full logs in /dev/shm/a25827f4-4b52-4bef-8f17-5e74f0d90fe4/XATTRGET_6547

Example of a job: https://gitlab.cern.ch/cta/CTA/-/jobs/36260961

We should use a more stable EOS version and be able to detect this kind of errors in the tests.