slapos/testing: fix tests after commit 2e5320ef

3 jobs for master in 0 seconds
Status Job ID Name Coverage
  External
passed SlapOS-Master.UnitTest-Master

01:17:42

passed SlapOS.Eggs.UnitTest-Master.Python2

00:23:30

passed SlapOS.Eggs.UnitTest-Master.Python3

00:13:02