Task #10079: manually copied parts of the QA package into LOFAR-Release-3_1....

Task #10079: manually copied parts of the QA package into LOFAR-Release-3_1. This allows us to roll out a new LOFAR-Release-3_1 on the scu with an extra QA_Service. The QA_Service hardly depends on anything, and doesn't require modifications to the rest of the lofar code. This makes this unusual manual merge acceptable. The rest of the QA code is not part of this release, and is not merged to this branch (yet). It runs isolated in docker containers on cep4.