Refactored code of the TEST UNIT READY

castor/messages/ForkCleaner.proto

castor/messages/ForkProbe.proto

castor/tape/tapeserver/daemon/CatalogueCleanerSession.cpp

castor/tape/tapeserver/daemon/CatalogueCleanerSession.hpp

castor/tape/tapeserver/daemon/CatalogueDrive.cpp

castor/tape/tapeserver/daemon/CatalogueDrive.hpp

castor/tape/tapeserver/daemon/CleanerSession.cpp

castor/tape/tapeserver/daemon/CleanerSession.hpp

castor/tape/tapeserver/daemon/ProbeSession.cpp

castor/tape/tapeserver/daemon/ProbeSession.hpp

castor/tape/tapeserver/daemon/ProcessForker.cpp

castor/tape/tapeserver/daemon/ProcessForkerProxy.hpp

castor/tape/tapeserver/daemon/ProcessForkerProxyDummy.cpp

castor/tape/tapeserver/daemon/ProcessForkerProxyDummy.hpp

castor/tape/tapeserver/daemon/ProcessForkerProxySocket.cpp

castor/tape/tapeserver/daemon/ProcessForkerProxySocket.hpp

castor/tape/tapeserver/drive/DriveGeneric.cpp

castor/tape/tapeserver/drive/DriveGeneric.hpp

castor/tape/tapeserver/drive/DriveInterface.hpp

castor/tape/tapeserver/drive/DriveTest.cpp