As flyspray does not support PHP 8 as of yet, transition to the php7
package by simply introducing a new php7_fpm role.

AURweb's rendercomment script uses python's libgit2 bindings which error
out when it can't read /home/aur/.git due to ProtectHome=true, instead
use ProtectHome=tmpfs.

Signed-off-by: Florian Pritz <bluewind@xinu.at>

roles/php-fpm: Removed the requirement of naming php-fpm users with php- prefix. Now the user is the same as the file containing the configuration.

roles/php-fpm: Change the InaccessibleDirectories directive to InaccessiblePaths, remove the /srv/vmail folder from it and make /var/lib/mysql optional.

This reverts commit 4e0074f177622cf825c343b63db5d1b51b1ec9f4.

The commit also adds the phpinfo role for testing purposes.