Use IDE CD drive for all tests to work around RHBZ #1430043

Authored by Adam Williamson <awilliam@redhat.com> on Mar 9 2017, 9:57 PM.

Description

Use IDE CD drive for all tests to work around RHBZ #1430043

Current kernels often crash on boot when there's a virtio-scsi
drive present, it seems. So let's switch to using an IDE CD
drive instead, to work around this.