SONAR-5753 Fix issue on MySQL
Web Tests: take a screenshot on failure
Web Tests: take a screenshot on failure. Fix the test
Try to remove unstable test
Temporary disable web tests
Automatic merge from branch-5.0

* origin/branch-5.0:
  Temporary disable web tests
  Try to remove unstable test
  Web Tests: take a screenshot on failure. Fix the test
  Web Tests: take a screenshot on failure
  SONAR-5753 Fix issue on MySQL