slapos_wechat: Fix up test

10 jobs for master in 0 seconds
Status Job ID Name Coverage
  External
failed SlapOS.Eggs.UnitTest-Master.Python2

00:15:34

failed SlapOS.Eggs.UnitTest-Master.Python3

00:16:50

failed SlapOS.Eggs.UnitTest-Master.Python2

00:14:55

failed SlapOS.Eggs.UnitTest-Master.Python2

00:24:32

failed SlapOS.Eggs.UnitTest-Master.Python2

00:13:11

failed SlapOS.Eggs.UnitTest-Master.Python2

00:30:39

failed SlapOS.Eggs.UnitTest-Master.Python3

00:17:43

failed SlapOS.Eggs.UnitTest-Master.Python3

00:15:41

failed SlapOS.Eggs.UnitTest-Master.Python3

00:13:28

failed SlapOS.Eggs.UnitTest-Master.Python3

00:27:30