test_result: fix pylint messages and enable coding style test

3 jobs for <span class="ref-name">feat/test_result_coding_style</span> in 0 seconds
Status Job ID Name Coverage
  External
passed ERP5.CodingStyleTest-TestRunner1

00:37:18

failed ERP5.PerformanceTest-TestRunner1

00:32:09

passed ERP5.UnitTest-TestRunner1

02:12:33