Test 194 checks for 'luks' to exclude as an unsupported format,
However, most formats are unsupported, due to migration blockers.

Rather than specifying a blacklist of unsupported formats, whitelist
supported formats (specifically, qcow2, qed, raw, dmg).

Signed-off-by: Jeff Cody <jcody@redhat.com>
---
 tests/qemu-iotests/194 | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/tests/qemu-iotests/194 b/tests/qemu-iotests/194
index 8d973b440f..1d4214aca3 100755
--- a/tests/qemu-iotests/194
+++ b/tests/qemu-iotests/194
@@ -21,7 +21,7 @@
 
 import iotests
 
-iotests.verify_image_format(unsupported_fmts=['luks'])
+iotests.verify_image_format(supported_fmts=['qcow2', 'qed', 'raw', 'dmg'])
 iotests.verify_platform(['linux'])
 
 with iotests.FilePath('source.img') as source_img_path, \
-- 
2.13.6