BIS-202 SP-674 improve registration log

...msx/cisd/etlserver/DssRegistrationLogDirectoryHelper.java

...ava/ch/systemsx/cisd/etlserver/DssRegistrationLogger.java

...gistrator/api/v1/impl/DataSetRegistrationTransaction.java

...rver/registrator/api/v2/JavaTopLevelDataSetHandlerV2.java

...egistrator/api/v2/JythonDataSetRegistrationServiceV2.java

...er/registrator/api/v2/JythonTopLevelDataSetHandlerV2.java

...gistrator/api/v2/impl/DataSetRegistrationTransaction.java

...ver/registrator/monitor/DssRegistrationHealthMonitor.java

...ator/v1/AbstractOmniscientTopLevelDataSetRegistrator.java

...trator/v1/AbstractProgrammableTopLevelDataSetHandler.java

.../etlserver/registrator/v1/DataSetRegistrationService.java

...lserver/registrator/v1/DataSetStorageAlgorithmRunner.java

...sd/etlserver/registrator/v1/DataSetStorageRollbacker.java

...ator/v2/AbstractOmniscientTopLevelDataSetRegistrator.java

...trator/v2/AbstractProgrammableTopLevelDataSetHandler.java

.../etlserver/registrator/v2/DataSetRegistrationService.java

...lserver/registrator/v2/DataSetStorageAlgorithmRunner.java

...sd/etlserver/registrator/v2/DataSetStorageRollbacker.java

...ver/registrator/JythonTopLevelDataSetRegistratorTest.java