dms: fix pylint messages and enable coding style test

3 jobs for fix/enable_coding_style in 0 seconds
Status Job ID Name Coverage
  External
passed ERP5.CodingStyleTest-TestRunner1

00:45:45

passed ERP5.PerformanceTest-TestRunner1

00:32:37

failed ERP5.UnitTest-TestRunner1

01:20:28