SP-180 BIS-21 : Support pure Java V2 Dropboxes - unit tests

...lserver/registrator/AbstractJythonDataSetHandlerTest.java

.../ch/systemsx/cisd/etlserver/registrator/JavaAllHooks.java

...stemsx/cisd/etlserver/registrator/JavaV2DyingProgram.java

...stemsx/cisd/etlserver/registrator/JavaV2FileNotFound.java

...emsx/cisd/etlserver/registrator/JavaV2SimpleTestcase.java

...registrator/JavaV2TestcasePostregistrationHookFailed.java

.../registrator/JavaV2TestcasePreregistrationHookFailed.java

...server/registrator/JavaV2TestcaseRegistrationContext.java

...sx/cisd/etlserver/registrator/JavaV2TestcaseRollback.java

...lserver/registrator/JavaV2TestcaseWithoutPostStorage.java

...cisd/etlserver/registrator/JythonDropboxRecoveryTest.java

...ver/registrator/JythonTopLevelDataSetRegistratorTest.java

...sd/etlserver/registrator/TestingDataSetHandlerJavaV2.java