System files are moved to `/etc/coreos-home-server` to be unambiguous
in relation to other, pre-installed system files. Long-running services
are also now defined as `Type=notify`, which helps improve ordering and
dependencies.
The fixes here include typos, removals of deprecated paths, fixes for
first-boot-only systemd targets and related MariaDB migrate machinery,
better logging for Postfix, and an increase in the default request body
size for the default NGINX ingress.