[PATCH] iotests/copy-before-write: specify required_fmts

[Vladimir Sementsov-Ogievskiy]

Declare that we need copy-before-write filter to avoid failure when
filter is not whitelisted.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@yandex-team.ru>
---
 tests/qemu-iotests/tests/copy-before-write | 3 ++-
 1 file changed, 2 insertions(+), 1 deletion(-)

diff --git a/tests/qemu-iotests/tests/copy-before-write 
b/tests/qemu-iotests/tests/copy-before-write
index 56937b9dff..2ffe092b31 100755
--- a/tests/qemu-iotests/tests/copy-before-write
+++ b/tests/qemu-iotests/tests/copy-before-write
@@ -218,4 +218,5 @@ read failed: Permission denied
 
 if __name__ == '__main__':
     iotests.main(supported_fmts=['qcow2'],
-                 supported_protocols=['file'])
+                 supported_protocols=['file'],
+                 required_fmts=['copy-before-write'])
-- 
2.25.1