auto-t: Make sure to disable autoconnect

autotests/testAP/failure_test.py

@@ -39,6 +39,13 @@ class Test(unittest.TestCase):
         psk_agent = PSKAgent('Password1')
         wd.register_psk_agent(psk_agent)
 
+        try:
+            dev2.disconnect()
+            condition = 'not obj.connected'
+            wd.wait_for_object_condition(dev2, condition)
+        except:
+            pass
+
         ordered_network.network_object.connect()
 
         condition = 'obj.connected'