fixup! Add support for CMF 2.3

fix pylint warnings
8 jobs for for_testrunner_2 in 0 seconds
Status Job ID Name Coverage
  External
passed ERP5.CodingStyleTest-Master

00:56:48

passed ERP5.CodingStyleTest-TestRunner2

01:07:42

passed ERP5.PerformanceTest-Master

00:22:53

failed ERP5.UnitTest-Master

01:34:56

failed ERP5.UnitTest-Master.Medusa

03:53:02

failed ERP5.UnitTest-TestRunner2

02:01:19

passed SlapOS.Eggs.UnitTest-Master.Python2

00:31:20

passed SlapOS.Eggs.UnitTest-Master.Python3

00:42:17