- XRootD/SSI/Protobuf errors or CTA Exceptions return error code 1
  (something went wrong with communication or in the frontend)

- User errors return error code 2 (user specified an invalid drive,
  vid, etc.)

- If text output, print error message on stderr and exit with code 2

- If --json output, print error message on stderr, print empty JSON
  array [] on stdout, and exit with code 2

Namespace lookup is expensive, so only do it when explicitly requested.

A previous commit had spun part of the code into a base library, but the split of the library was not helping.
Replaced the cta-lib-base RPM with a cta-lib-common RPM.

Renames CTA_ArchiveFileID to sys.archive.file_id
Renames CTA_StorageClass to sys.archive.storage.class

[REPACK] Added a failed to create archive request counter so that the Repack Request is complete or failed if Retrieve subrequest is failed (creation or execution)

Added mount policy to the Repack Request

If this option is used, then the bufferURL provided to the repack request will be the one specified. Otherwise, the repack buffer URL will be the one from the cta-frontend-xrootd.conf file

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

command.

Implement cta-admin disksystem ch command.

Implement cta-admin disksystem add/ls/rm commands.

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.

The blob is a set of type/value pairs which can be serialised to a byte
array for storage in the DB.

The blob is a set of type/value pairs which can be serialised to a byte
array for storage in the DB.