Fix trf config units tests 21.0

Previously configuration-only unit tests of job transforms had errors in their logs due to failed attempts to access the non-existant output file. This change suppresses the problematic call in the case that outputFileValidation is switched off. The change was made in the individual transform files, so as not to alter the behaviour for non-simulation transforms. It would be cleaner to tweak the generateReport method of the transform module though.

This in addition to printing the configuration log in the test output makes it much easier to determine the actual cause of any problems.