Fixes #32394 - Use grub_pass macro instead of variable

The default Kickstart template uses obsolete @grub_pass variable
which are not being set anywhere. Maybe it's due to typo or else.
I suggest to use macro instead so it's possible to set the password
via host params and do not clone the template for this purpose only.

Fixes #31240 - New Host Registration Form (#8419)

Completely in React, with router & PF4 components
Divided into two tabs: General fields & Advanced Fields
Slots for extending form fields (general / advanced)
Form can be submitted only if there are no invalid fields...

Fixes #30748 - On Ubuntu 18.04+ use /etc/netplan

Fixes #32004 - Don't ignore use-ntp host param in prov templates

Setting use-ntp=false will never work due to short circuit evaluation
of boolean expressions in templates. This patch should make use-ntp
parameter be honored if set to false.

Fixes #31946 - support for S390x

On S390 kernel and initramdisk are at a different path and with different names: images/kernel.img and images/initrd.img. Foreman operating system model must reflect that in order to download Anaconda installer to TFTP.

Co-authored-by: Ewoud Kohl van Wijngaarden <ewoud@kohlvanwijngaarden.nl>

Refs #32372 - correct remaining paths

bb4633bcd4facc339a8099f4a8e89312323d8b61 refactored the atomic kickstart but
used an incorrect path for logs in the %pre section. This corrects it.

Fixes #32372 - Correct path for logs in kickstart

bb4633bcd4facc339a8099f4a8e89312323d8b61 refactored the kickstart but
used an incorrect path for logs in the %pre section. This corrects it.

Fixes #32295 - Fix Puppet service for Debian provisioning

This is a workaround for a Puppet bug where the provider is incorrect
and the service ends up not being enabled.
https://tickets.puppetlabs.com/browse/PUP-10963

Fixes #31687 - Host Registration - Repository & GPG keys (#8402)

New feature in `Global Registration template` for adding
repository & gpg key before the host registration starts.

For adding repository (& key), users needs to specify
two parameters: `repo` & `repo_gpg_key`.

Fixes #31743 - Template macro install_packages (#8298)

For package installation on supported OS families: Red Hat, Debian & Suse.
In host registration users can now install packages
by setting the `host_packages` parameter.

Also if a snippet `host_init_config_post` is defined, it gets added to the registration script.