[PATCH 3/6] tests/functional: replace avocado process with subprocess

["Daniel P. Berrangé" <berrange@redhat.com>]

The standard python subprocess.check_call method is better than
avocado.utils.process as it doesn't require stuffing all args
into a single string.

Signed-off-by: Daniel P. Berrangé <berrange@redhat.com>
---
 tests/functional/reverse_debugging.py | 8 ++++----
 1 file changed, 4 insertions(+), 4 deletions(-)

diff --git a/tests/functional/reverse_debugging.py b/tests/functional/reverse_debugging.py
index 405eb6b3b7..1b880cda8f 100644
--- a/tests/functional/reverse_debugging.py
+++ b/tests/functional/reverse_debugging.py
@@ -11,6 +11,7 @@
 # later.  See the COPYING file in the top-level directory.
 import os
 import logging
+from subprocess import check_output
 
 from qemu_test import LinuxKernelTest, get_qemu_img
 from qemu_test.ports import Ports
@@ -100,8 +101,6 @@ def vm_get_icount(vm):
         return vm.qmp('query-replay')['return']['icount']
 
     def reverse_debugging(self, shift=7, args=None):
-        from avocado.utils import process
-
         logger = logging.getLogger('replay')
 
         # create qcow2 for snapshots
@@ -111,8 +110,9 @@ def reverse_debugging(self, shift=7, args=None):
         if qemu_img is None:
             self.skipTest('Could not find "qemu-img", which is required to '
                           'create the temporary qcow2 image')
-        cmd = '%s create -f qcow2 %s 128M' % (qemu_img, image_path)
-        process.run(cmd)
+        out = check_output([qemu_img, 'create', '-f', 'qcow2', image_path, '128M'],
+                           encoding='utf8')
+        logger.info("qemu-img: %s" % out)
 
         replay_path = os.path.join(self.workdir, 'replay.bin')
 
-- 
2.50.1