testing: Factor snapshot management

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

01:51:06

failed SlapOS.Eggs.UnitTest-Master.Python2

00:13:55

failed SlapOS.Eggs.UnitTest-Master.Python3

00:25:15

failed SlapOS-Master.UnitTest-Master

02:23:52

failed SlapOS.Eggs.UnitTest-Master.Python2

00:14:07

failed SlapOS.Eggs.UnitTest-Master.Python2

00:18:45

failed SlapOS.Eggs.UnitTest-Master.Python2

00:14:47

failed SlapOS.Eggs.UnitTest-Master.Python2

00:13:51

failed SlapOS.Eggs.UnitTest-Master.Python3

00:22:33

failed SlapOS.Eggs.UnitTest-Master.Python3

00:16:43

failed SlapOS.Eggs.UnitTest-Master.Python3

00:25:17

failed SlapOS.Eggs.UnitTest-Master.Python3

00:21:07