Raise on duplicated entries on software.cfg.json

See merge request !609
14 jobs for master in 0 seconds
Status Job ID Name Coverage
  External
failed SlapOS-Master.UnitTest-Master

failed SlapOS.Eggs.UnitTest-Master.Python2

04:16:47

failed SlapOS.Eggs.UnitTest-Master.Python3

00:37:33

failed SlapOS-Master.UnitTest-Master

16:16:09

passed SlapOS.Eggs.UnitTest-Master.Python2

03:47:49

passed SlapOS.Eggs.UnitTest-Master.Python2

00:27:35

failed SlapOS.Eggs.UnitTest-Master.Python3

00:43:43

passed SlapOS.Eggs.UnitTest-Master.Python3

04:34:08

failed SlapOS.Eggs.UnitTest-Master.Python3

00:07:33

failed SlapOS.Eggs.UnitTest-Master.Python3

00:07:32

failed SlapOS.Eggs.UnitTest-Master.Python3

00:08:28

failed SlapOS.Eggs.UnitTest-Master.Python3

00:05:23

failed SlapOS.Eggs.UnitTest-Master.Python3

00:32:22

passed SlapOS.Eggs.UnitTest-Master.Python3

01:26:25