Add qemu-io Popen constructor wrapper. To be used in the following new
test commit.

Signed-off-by: Vladimir Sementsov-Ogievskiy <vsementsov@virtuozzo.com>
---
 tests/qemu-iotests/iotests.py | 4 ++++
 1 file changed, 4 insertions(+)

diff --git a/tests/qemu-iotests/iotests.py b/tests/qemu-iotests/iotests.py
index 3b7b57489a..be53c8d5ec 100644
--- a/tests/qemu-iotests/iotests.py
+++ b/tests/qemu-iotests/iotests.py
@@ -216,6 +216,10 @@ def qemu_io_wrap_args(args: Sequence[str]):
         return qemu_io_args + list(args)
 
 
+def qemu_io_popen(*args):
+    return qemu_tool_popen('qemu-io', qemu_io_wrap_args(args))
+
+
 def qemu_io(*args):
     '''Run qemu-io and return the stdout data'''
     return qemu_tool_pipe_and_status('qemu-io', qemu_io_wrap_args(args))[0]
-- 
2.29.2