semanage is part of "policycoreutils-python" package, but mariadb55 meta package depend on "policycoreutils", so semanage is not installed and SELinux context is not restored properly in scl root.
I haven't checked other database packages, maybe there's the same problem.
Thanks for reporting, will fix for Beta.
Since the problem described in this bug report should be
resolved in a recent advisory, it has been closed with a
resolution of ERRATA.
For information on the advisory, and where to find the updated
files, follow the link below.
If the solution does not work for you, open a new bug report.