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

Conflicts:
	migration/castor/castorns_ctamigration_schema.sql

Conflicts:
	continuousintegration/docker/ctafrontend/cc7/etc/yum/pluginconf.d/versionlock.list
	migration/gRPC/CMakeLists.txt
	migration/gRPC/EosImportDirs.cpp
	migration/gRPC/EosImportDirs.hpp
	migration/gRPC/EosImportDirsCmd.cpp
	migration/gRPC/EosImportFiles.cpp
	migration/gRPC/GrpcClient.cpp
	migration/gRPC/GrpcClient.hpp
	migration/gRPC/GrpcUtils.cpp

Now we are also tolerant of whether paths in config file do or do
not have a trailing slash.

Pathnames from the DB must have a leading slash if we have to strip off
the CASTOR prefix, but in any case we will convert all filenames to
absolute filenames by adding the EOS prefix.

This test is failing, probably because EOS version in CI was compiled
against an incompatible version of the grpc protobuf. Will obtain a new
EOS version and retry.