Merged LOFAR-Release-4_0 into master. saved production edits from post stop-day tweaks and fixes. Added missing file

SW-861: manualy copied in the qa_service related modifications from long-living-prototype-branch adder-Task10079 dffc966a

SW-857: manually merged in the changes for the qa_service from the adder-branch into LOFAR-Release-4_0

SW-822: Commit unstashable / unresetable file changes after fresh clone, probably due to .gitattributes / line endings

Resolve SW-796

See merge request !26

(cherry picked from commit ae8f2617)

fe65ce37 SW-796: fixed radb tests
65b4d86f SW-796: fixed t_momqueryservice.py. We still need to un-skip IntegrationTestMoMDatabaseWrapper.
389ea3e4 SW-796: fixed tpyparameterset
4e44e3c3 SW-796: fixed t_TreeStatusEvents
63b9b189 SW-796: typos
2eb326cc SW-796: fixed ingest typos and tests
be63b190 SW-796: fixed t_qa_service
764d8d76 SW-796: fixed t_qa_service
17478140 SW-796: fixed (not-so-complete) test_ra_service_and_rpc
67306896 SW-796: fixed tRATaskSpecified
469fe393 SW-796: fixed t_resource_estimator
6d87ea88 SW-796: fixed t_schedulechecker
3fba3ba2 SW-796: fixed t_resource_availability_checker
7b1f0f7b SW-796: fixed typos in scraper.
c5dc773e SW-796: fixed t_resourceassigner
7f165dd2 SW-796: fixed t_resourceassigner
de48d55c SW-796: fixed ltastorageoverview tests: test_store, integration_test_store and test_lso_webservice
977ee079 SW-796: fixed t_schedulers
6d691753 SW-796: Merge branch 'SW-796' of git.astron.nl:ro/lofar into SW-796
ca84122f SW-796: fixed tresourcetool
98cc4a38 SW-796: fixed t_translation_service
4150a16d SW-796: fixed t_specification_service
c9a5988b SW-796: fixed t_TriggerEmailService
4e779152 SW-796: fixed t_trigger_service
60e265b9 SW-796: fixed t_trigger_cancellation_service
897bd380 SW-796: fixed build dependency for t_ingestpipeline
469e29cd SW-796: Set default port to the one in production.
2c551559 SW-795: Change timeout because its too short for the tests running on the buildhost.
47a70ce8 SW-795: Change timeout to match tested timeout

SW-699: added UsingToBusMixin, and (re)use that in all the ServiceMessageHandlers and some AbstractMessageHandler derivatives

SW-699: Use exchange,routing_key syntax for AbstractBusListener constructor, drop use of **kwargs, fix IngestEventHandler as it was still propagating subjects to listen for

SW-699: Make notifications unconfigurable, greatly reducing complexity of the higher abstraction layers.

SW-699: Use a single broker and bus (exchange), and make service names unconfigurable (fixed in Service and RPC). Greatly reduces configuration size.

SW-0: moved the cep4_utils.py file from QA to LCS/PyCommon, and fixed references. Needs to be adapated in https://svn.astron.nl/LOFAR/branches/adder-Task10079 as well.

SW-0: another manual merge (manual file copy) from https://svn.astron.nl/LOFAR/branches/adder-Task10079