Due to parallel probing of the linux kernel `/dev/sd*` can't be used to
reliably address a hard disk. This can be seen by the many spurious
failures of the dracut CI, where `mdadm` failed with error 524 or tests
failed due to the success marker message written to the wrong disk.
* don't rely on `/dev/sd*` but use disk ids and `/dev/disk/by-id/ata-disk_<name>`
* specify the exact qemu machine architecture `-M q35` needed for the
disk ids. A later patch will move this to `run-qemu`, when all tests are converted
* due to `-M q35` the interface names have changed from
`ens2` -> `enp0s1` and `ens3` -> `enp0s2`
This change still supports Python 2.6 and 2.7 but loses support
for Python 2.5.
The reason for this change was that Fedora 30 does not ship
python-imgcreate but ships python3-imgcreate.
Signed-off-by: Böszörményi Zoltán <zboszor@pr.hu>
Harald Hoyer