tests/avocado: fix waiting for vm shutdown in replay_linux

This patch fixes the race condition in waiting for shutdown
of the replay linux test.

Signed-off-by: Pavel Dovgalyuk <Pavel.Dovgalyuk@ispras.ru>
Suggested-by: John Snow <jsnow@redhat.com>
Message-ID: <20230811070608.3383343-4-pavel.dovgalyuk@ispras.ru>
Signed-off-by: Thomas Huth <thuth@redhat.com>

tests/avocado/replay_linux.py

@@ -93,7 +93,7 @@ def launch_and_wait(self, record, args, shift):
                 % os.path.getsize(replay_path))
         else:
             vm.event_wait('SHUTDOWN', self.timeout)
-            vm.shutdown(True)
+            vm.wait()
             logger.info('successfully fihished the replay')
         elapsed = time.time() - start_time
         logger.info('elapsed time %.2f sec' % elapsed)