Fix tests broken last night

t/test_interfaces.py

@@ -151,6 +151,7 @@ class TestWithDummy(unittest.TestCase):
 
     def tearDown(self):
         # oops here
+        if hasattr(self, 'dummyname'):
             os.system("ip link del %s" % self.dummyname)
 
 # FIXME: Links

t/test_protocol.py

@@ -108,7 +108,7 @@ class TestServer(unittest.TestCase):
         check_error(self, "proc crte =a") # invalid b64
 
         # simulate proc mode
-        srv.commands = netns.protocol._proc_commands
+        srv._commands = netns.protocol._proc_commands
         check_error(self, "proc crte foo")
         check_error(self, "proc poll 0")
         check_error(self, "proc wait 0")