Previously, the default model for aarch64 raw disk images assumes that
you're deploying on Raspberry Pi, and not standard aarch64 systems. This
meant that all raw disk images were built with RPi firmware, and an MBR
boot record, which made it incompatible with systems that require uEFI/GPT
compatibility, especially with Edge Image Builder and Metal3/CAPI deployment
usage.
This PR introduces the following changes:
* Introduces new `Default-RPi` and `Base-RPi` profiles for compatibility with RPi users
* Forces `Base` and `Base-RT` profiles to use GPT based images (not MBR)
* Introduces a new `Base-RT-RPi` profile for kernel-rt on RPi (with MBR)
* Removes Raspberry Pi firmware packages from anything other than RPi profiles
* Modifies the `editbootinstall_rpi.sh` script to support container builds
* Adds policycoreutils-python-utils to the list of packages (for semanage)
See: https://bugzilla.suse.com/show_bug.cgi?id=1240619
