rename conflicting test methods

Some test methods where redefined, use different name to prevent the
clashes
10 jobs for <span class="ref-name">feat/pylint</span> in 0 seconds
Status Job ID Name Coverage
  External
running SlapOS.Eggs.UnitTest-Jerome.Python2

9929:06:59

running SlapOS.Eggs.UnitTest-Jerome.Python3

9928:33:58

passed SlapOS.Eggs.UnitTest-Jerome.Python3

00:41:12

passed SlapOS.Eggs.UnitTest-Jerome.Python2

00:16:57

passed SlapOS.Eggs.UnitTest-Jerome.Python2

00:15:38

passed SlapOS.Eggs.UnitTest-Jerome.Python2

00:12:54

passed SlapOS.Eggs.UnitTest-Jerome.Python2

00:15:37

passed SlapOS.Eggs.UnitTest-Jerome.Python3

00:25:29

passed SlapOS.Eggs.UnitTest-Jerome.Python3

00:44:29

passed SlapOS.Eggs.UnitTest-Jerome.Python3

00:41:46