apache: disable module mod_php7.

Use PHP 8.0.

mariadb: fix service run at boot because ansible does not support service aliases.

nextcloud: add hostname to main configuration file.

nextcloud: backup config file with .new extension.

nextcloud: ignore deploy error (see https://github.com/nextcloud/server/issues/22590).
nextcloud/password: use ncadmin username, fix memory warning.

nextcloud: use ncadmin for admin user, show database name and database username.

Adapt for latest version of Mediawiki and Nextcloud.
mediawiki: fix password generation program.

Add rule for: apache, mariadb, mediawiki, nextcloud, moodle.

Add option to show available parameters

Fix check return code of playbook run.
Check for modules dir and superuser privileges.
Pass variables from command-line paramenters.

postgresql: check /var/lib/pgsql/data/global for initialized database.

Initial build in Sisyphus.