journalctl access for non-root users

The solution is to change group ownership and add a sticky bit to the parent folder before the .journal files are created.

chown :systemd-journal /var/log/journal/f9afeb75a5a382dce8269887a67fbf58
chmod g+s /var/log/journal/f9afeb75a5a382dce8269887a67fbf58