Foreman » Installer

Fixes #29781 - Drop passenger references from hiera configuration

Refs #28928 - Remove checkpoint_segments from tuning

The checkpoint_segments setting no longer exists since PostgreSQL 10 and
the server fails to start up if it's present.

This is not a complete fix since it doesn't clean it up on existing
installations which can break upgrades.

Fixes #27775 - Introduce tuning for installation size

This introduces a --tuning parameter to Katello/Content proxies to
optimize for a small/medium/large installation. To achieve this, it
relies on Kafo 4 which allows setting custom facts which are usable in...