tests: uitests: Fix remote dbus test

My last patch broke it!

tests/uitests/cli.py

@@ -65,7 +65,7 @@ class VMMCLI(uiutils.UITestCase):
         """
         self.app.open()
         newapp = uiutils.VMMDogtailApp("test:///default")
-        newapp.open()
+        newapp.open(check_already_running=False)
         uiutils.check_in_loop(lambda: not newapp.is_running())
         import dogtail.tree
         vapps = [a for a in dogtail.tree.root.applications() if

tests/uitests/utils.py

@@ -355,7 +355,7 @@ class VMMDogtailApp(object):
     def is_running(self):
         return bool(self._proc and self._proc.poll() is None)
 
-    def open(self, extra_opts=None):
+    def open(self, extra_opts=None, check_already_running=True):
         extra_opts = extra_opts or []
 
         if tests.utils.clistate.debug:
@@ -374,6 +374,7 @@ class VMMDogtailApp(object):
                 "--test-first-run", "--no-fork", "--connect", self.uri]
         cmd += extra_opts
 
+        if check_already_running:
             self.error_if_already_running()
         self._proc = subprocess.Popen(cmd, stdout=stdout, stderr=stderr)
         self._root = dogtail.tree.root.application("virt-manager")