Allow reading all of /etc/php[578]/** in abstractions/php
... and with that, make a rule in the php-fpm profile (which missed php8) superfluous.
Fixes: #229
Fixes: https://bugzilla.opensuse.org/show_bug.cgi?id=1186267#c11
I propose this for all branches. (Optionally: only backport the abstraction change, and keep the php-fpm cleanup master-only. If you want that, please say so when approving the MR.)