Install zfs

[AlanMarshall]

This implements an openQA test to ensure that filesystem zfs can be installed under root xfs, and will operate correctly.

The test is included as part of FLAVOR universal used for release window testing and ongoing testing of system updates to ensure that zfs users will have a working filesystem following every individual change. It operates in uefi boot but with secure boot disabled because the zfs module taints the kernel.

The test saves a qcow2 file so that follow on tests can be added to implement further proposed feature tests.

Tested on Fedora 41:

./fifloader.py -c -l templates.fif.json
openqa-cli api -X POST isos ISO=Rocky-9.5-x86_64-dvd.iso ARCH=x86_64 DISTRI=rocky FLAVOR=universal VERSION=9.5 CURRREL=9 LOCATION=https://dl.rockylinux.org/pub/rocky/9.5 BUILD=-"$(date +%Y%m%d.%H%M%S).0"-universal-9.5 TEST=install_zfs

Result:
Pass