Corrected the segmentation fault problem if exception happens while the reporting of ArchiveSuccesses fails

Changed the log message at the starting of cta-taped. If an exception happens, the error messages will tell that cta-taped cannot start.

Corrected scheduling to wait for more files to be queued before creating ArchiveForRepack mount + Unit test

Avoided counting an error for files hitting end of tape.

Added files and bytes count for Retrieved files from User or Repack in the "tape session finished" message
Made the Repack system test clearer by printing steps and by adding folders for the reports

Changed the logging of successful Retrieve and Archive jobs to differentiate between User and Repack jobs

kill. This is quite likely for cta-taped as its static memory buffer
consume a lot of memory.

Moved the space reservation information to the DriveStatus object store object instead of a new central registry.
The central registry would have been a single point of contention as was the DriveRegistry before being split into
DriveStates. As the problem is so close to the one of the drive status, we can actually reuse the drive status for this purpose.

The algorithm will also change as we move the responsibility of querying the free space from the disk systems into the OStoreDb
object instead of the Scheduler. This leads to a slightly worth layering of responsibilities, making the OStoreDb::RetrieveMount
object a client of the disk::DiskSystemFreeSpaceList object.

The current implementation will also query the free space from the disk systems on each pop, instead of doing so in a globally
cached fashion. With the new model, we could cache the free space per drive (if needed), but not globally. This is not expected
to be a real issue and free space is a global counter in the disk system, expected to be readily available.

Added mount policy to the Repack Request

or write.

Implements setTapeMounted in the scheduler interface for RetrieveMount
and ArchiveMount.

This reverts commit 787d41d2.

files for cta-tape-label.

Add standalone command line tool cta-tape-label.

Command mount, label, umount the tape pointed by VID option. Tape drive
and library parameters used from /etc/cta/TPCONFIG file and catalogue
parameters from /etc/cta/cta-catalogue.conf.
To be labelled the tape must be present in the catalogue and must be
empty.
By default the tool labels the tape with enabled logical block protection
if drive supports such mode. For non-blank tapes command checks previous tape
label and label only if the old label is the same or match to the label in the
command line oldLabel option. To skip label checks for non-blank tapes --force
option could be used.

Added the ArchiveForRepack mountType to the Drive reporting
Transformed the DataTransferSession::mountTypeToString() to add the ArchiveForRepack mountType, transformed the normal "Archive" into "ArchiveForUser"

Implement catalogue createDiskSystem,
getAllDiskSystems, deleteDiskSystem methods.

tapes

Add read-only tape flag support in the catalogue for the TAPE table.
Add RdbmsCatalogue::setTapeReadOnly method to modify this flag with
  "cta-admin tape ch" command.
Add RdbmsCatalogue::setTapeReadOnlyOnError to set this flag from taped.
Add support for rdonly flag listing for "cta-admin tape ls" and
  "cta-admin sq" command.

- Type of checksumBlob in cta.proto should be bytes not string
- ADLER32 passed into blob as uint32_t not string (conversion to
  bytearray is now handled inside the ChecksumBlob class)