When running 183 in Cirrus-CI on macOS, or with our vm-build-openbsd
target, it fails with an "Timeout waiting for return on handle 0" error.

Let's mark it as supported only on systems where the test is working
fine (i.e. Linux, FreeBSD and NetBSD).

Signed-off-by: Thomas Huth <thuth@redhat.com>
---
 tests/qemu-iotests/183 | 1 +
 1 file changed, 1 insertion(+)

diff --git a/tests/qemu-iotests/183 b/tests/qemu-iotests/183
index bced83fae0..0bbae13647 100755
--- a/tests/qemu-iotests/183
+++ b/tests/qemu-iotests/183
@@ -42,6 +42,7 @@ trap "_cleanup; exit \$status" 0 1 2 3 15
 . ./common.filter
 . ./common.qemu
 
+_supported_os Linux FreeBSD NetBSD
 _supported_fmt qcow2 raw qed quorum
 _supported_proto file
 
-- 
2.18.1