Remove gRPC client code from CTA Frontend

• We will remove this code from the CTA frontend
• We will create a new operational tool that performs the same task:
  • As Vlado suggested (and accepted by the team), we will add this funcitonallity to the cta-admin-ops tool.
  • This will be done before removing it from the CTA frontend.

Allow VO override for repack

• We decided on a 5th alternative:
  • Add an extra column to the VIRTUAL_ORGANIZATION table, named REPACK_VO (provisional name).
  • Only only row can have this field as True (only one repack VO).

Simplify build procedure to improve portability and not to depend on platform specific tools

• Fons will write in the issue a list of all the pre-requisites. In addition he will start experimenting these changes in a separate branch.

Add valgrind test for the operations tools

• We will not run any of these tools with Valgrind.
• Instead, Lasse will check the static analysis tools to see if they are correctly detecting unsave allocations using "new".

Average bandwidth not being shown correctly

• We will remove this column from the "cta-admin sq" command. This can be done by removing the entry from the protobuf definition.
• We can also take advantage of this opportunity to remove all "deprecated" entries in the protobuf definition for cta-frontend.