update to new mongodb driver and ported the conf_file parameter to the common layer

Signed-off-by: Claudio Bisegni <Claudio.Bisegni@lnf.infn.it>
fixed username

Signed-off-by: Claudio Bisegni <Claudio.Bisegni@lnf.infn.it>
Added vas data area writeable file, and restructured some method through vfs class hierarchy

Signed-off-by: Claudio Bisegni <Claudio.Bisegni@lnf.infn.it>
scanned development

Signed-off-by: Claudio Bisegni <Claudio.Bisegni@lnf.infn.it>
working on save packet on datafile

Signed-off-by: Claudio Bisegni <Claudio.Bisegni@lnf.infn.it>
first version of the scanner working, but it is very buggy... need to be finished.

Signed-off-by: Claudio Bisegni <Claudio.Bisegni@lnf.infn.it>
first version of the scanner working, but it is very buggy... need to be finished and tested.

Signed-off-by: Claudio Bisegni <Claudio.Bisegni@lnf.infn.it>
resolved conflict

Signed-off-by: Claudio Bisegni <Claudio.Bisegni@lnf.infn.it>

Conflicts:
	ChaosDataService/index_system/IndexDriver.h
	ChaosDataService/index_system/MongoDBIndexDriver.cpp
	ChaosDataService/index_system/MongoDBIndexDriver.h
	ChaosDataService/index_system/StageDataVFileScanner.cpp
added a journal file for the processed virtual file

The journal contain avery elaborated offset, for the stage file, it contains the offset of all data pack wrote into datafile.
In this way last offset wrote in journal is the last data pack for which operation is gone well. The journal is enabled only for the
processed file, not for the destination file or operation.

Signed-off-by: Claudio Bisegni <Claudio.Bisegni@lnf.infn.it>
added start and end handler on DataPackScanner useful to do some action before and after the scan cycle of a virtual file

Signed-off-by: Claudio Bisegni <Claudio.Bisegni@lnf.infn.it>
finished the processing of the stage file with indexing and migration od final datafile[need to be tested]

Signed-off-by: Claudio Bisegni <Claudio.Bisegni@lnf.infn.it>
fixed some issue on scanning data block

Signed-off-by: Claudio Bisegni <Claudio.Bisegni@lnf.infn.it>
Merge branch 'feature/CHSFRMWRK-22-realize-the-base-index-of-every' into development