Resolve SW-828

See merge request !72

SW-828: processed review comment: Made a strict seperation in goals/responsibilities. The PostgresTestDatabaseInstance gives you a running isolated postgres server, and the PostgresTestMixin uses such an instance automagically while unittesting.

SW-828: class variable instantation and checkig for None, so we can handle any exception during setup phase.

SW-828: abstracted RADBCommonTestMixin into even more common PostgresTestMixin. adapted t_postgres.py and radb_common_testing.py to new PostgresTestMixin.

SW-824: Resolve SW-824

See merge request !73

SW-828: replaced use of flag-argurment by a generic get_cep4_slurm_nodes method + specific methods get_cep4_available_cpu_nodes and get_cep4_up_and_running_cpu_nodes

SW-826: adding Casacore.casa as dependency on LCS/Common makes many lofar libs dependend on 3rd party libs which we don't actually use. This hinders us in deployment and maintenance on various systems. However... apparently many packages depend on this dependency, so here it is again.  

Resolve SW-827

See merge request !71

SW-827: check in messagebus and rpc/service tests if the TemporaryExchange/TemporaryQueue's are really deleted. Some tests fail now, proving bug SW-827 exists.

Resolve SW-826

See merge request !69

SW-826: adding Casacore.casa as dependency on LCS/Common makes many lofar libs dependend on 3rd party libs which we don't actually use. This hinders us in deployment and maintenance on various systems. Hence, I removed the hard dependency on Casacore.casa, and made the empty-stub-CasaLogSink print out a warning message to cerr.

SW-826: adding Casacore.casa as dependency on LCS/Common makes many lofar libs dependend on 3rd party libs which we don't actually use. This hinders us in deployment and maintenance on various systems. Hence, I removed the hard dependency on Casacore.casa, and made the empty-stub-CasaLogSink print out a warning message.

SW-826: only insert predecessor/successor links into the radb when needed, thus preventing unneeded error log lines about duplicate keys

SW-826: fixed the taskprescheduler by letting it respond to RA.TaskApproved events and by NOT inserting/updating the task into the RADB.

SW-826: the taskprescheduler should NOT insert the task into the RADB. Added that requirement to the test, which now fails. Next commit has the fix for this bug.

SSB-102: (also misspelled in the commit logs as SBB-102): reverted the work of SSB-102 from LOFAR-Release-4_0, because it block the station software from starting up. This feature is a good idea, but the implementation is far from complete/robust/bug-free. Joern/Thomas/Sander's work is not lost, but can be found in the git history and can be reused in a next attempt to implement the TBB trigger feature.

SW-818: had to mock away an ssh call to lcu as well.

See merge request !65

SW-818: fixed t_trigger_service.py and made sure that Popen is mocked away so...

See merge request !63

SW-818: fixed t_trigger_service.py and made sure that Popen is mocked away so the test does not make acual calls to the tbbctl.

SW-818: Resolve SW-818

See merge request !61

COB-23: Station->COBALT2 mapping after fully wiring COBALT2. Simpler...

See merge request !60