tests: adjust test_check_software expected output

the vulnerability database content seems to have changed
3 jobs for master in 0 seconds
Status Job ID Name Coverage
  External
failed SlapOS-Master.UnitTest-Master

02:37:12

passed SlapOS.Eggs.UnitTest-Master.Python2

00:17:44

failed SlapOS.Eggs.UnitTest-Master.Python3

00:19:23