SW-839: Classify Python tests of RAServices subsystem

LCS/Messaging/python/messaging/test/t_RPC.py

LCS/Messaging/python/messaging/test/t_messagebus.py

LCS/Messaging/python/messaging/test/t_messages.py

LCS/PyCommon/test/t_cache.py

LCS/PyCommon/test/t_cep4_utils.py

LCS/PyCommon/test/t_dbcredentials.py

LCS/PyCommon/test/t_defaultmailaddresses.py

LCS/PyCommon/test/t_methodtrigger.py

LCS/PyCommon/test/t_postgres.py

LCS/PyCommon/test/t_test_utils.py

LCS/PyCommon/test/t_util.py

LCS/PyStationModel/test/t_antennasets_parser.py

LCS/pyparameterset/test/tpyparameterset.py

LTA/LTAIngest/LTAIngestCommon/test/t_job.py

LTA/LTAIngest/LTAIngestCommon/test/t_srm.py

LTA/ltastorageoverview/test/integration_test_store.py

LTA/ltastorageoverview/test/test_ingesteventhandler.py

LTA/ltastorageoverview/test/test_lso_webservice.py

LTA/ltastorageoverview/test/test_scraper.py

LTA/ltastorageoverview/test/test_store.py