Merge pull request #2067 from qingwangrh/1789236_disk_extension_fix_cd_to_ide

Fix cd format to ide for virtio_scsi

qemu/tests/cfg/disk_extension.cfg

@@ -37,6 +37,7 @@
         guest_cmd = "dd if=/dev/urandom of=%s oflag=direct bs=${max_size}"
     Windows:
         guest_cmd = "WIN_UTILS:\coreutils\DummyCMD.exe %s ${max_size_in_bytes} 1"
+        cd_format_cd1 = ide
     virtio_blk:
         driver_name = viostor
     virtio_scsi: