don't hardcode numpy/scipy/pandas version in software files

This is a followup of 02fad6a8
4 jobs for master in 0 seconds
Status Job ID Name Coverage
  External
failed SlapOS.Eggs.UnitTest-Master.Python2

00:14:09

passed SlapOS.Eggs.UnitTest-Master.Python3

00:16:40

passed SlapOS.KVM.ResilienceTest-Master

00:21:09

failed SlapOS.SlapRunner.ResilienceTest-Master.ERP5

00:33:05