tests/qemu-iotests: Require virtio-scsi-pci

Check that virtio-scsi-pci is present in the QEMU build before running
the tests.

Signed-off-by: Fabiano Rosas <farosas@suse.de>
Reviewed-by: Thomas Huth <thuth@redhat.com>
Message-Id: <20230208194700.11035-12-farosas@suse.de>
Signed-off-by: Thomas Huth <thuth@redhat.com>

tests/qemu-iotests/186

@@ -40,6 +40,7 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
 _supported_fmt qcow2
 _supported_proto file fuse
 _require_drivers null-co
+_require_devices virtio-scsi-pci
 
 if [ "$QEMU_DEFAULT_MACHINE" != "pc" ]; then
     _notrun "Requires a PC machine"