Foreman Maintain

Refs #37275: Enable modules and download updates after enabling postgresql module

switch-to PostgreSQL 13 module during the upgrade (#811)

Fixes #37275 - switch-to postgresql:13 during 6.16 GA upgrade

Fixes #37209 - add PostgreSQL 13 storage check

remove snapshot backup feature

only run module stuff on el8

Drop uses of max_version

Drop all min_version checks

Remove old options from installer reset

Fixes #37172 - Use Run class for installer procedures

Fixes #37149: Include certs tar in backup