introduce a GC deletion log config
introduce a GC deletion log config

djw8605/cvmfs,DrDaveD/cvmfs,cvmfs/cvmfs,reneme/cvmfs,Moliholy/cvmfs,DrDaveD/cvmfs,trshaffer/cvmfs,trshaffer/cvmfs,alhowaidi/cvmfsNDN,Moliholy/cvmfs,cvmfs/cvmfs,DrDaveD/cvmfs,trshaffer/cvmfs,Moliholy/cvmfs,trshaffer/cvmfs,Moliholy/cvmfs,alhowaidi/cvmfsNDN,DrDaveD/cvmfs,Moliholy/cvmfs,djw8605/cvmfs,cvmfs/cvmfs,Gangbiao/cvmfs,DrDaveD/cvmfs,djw8605/cvmfs,alhowaidi/cvmfsNDN,Gangbiao/cvmfs,DrDaveD/cvmfs,Gangbiao/cvmfs,reneme/cvmfs,cvmfs/cvmfs,reneme/cvmfs,djw8605/cvmfs,Gangbiao/cvmfs,reneme/cvmfs,DrDaveD/cvmfs,alhowaidi/cvmfsNDN,alhowaidi/cvmfsNDN,reneme/cvmfs,cvmfs/cvmfs,cvmfs/cvmfs,Gangbiao/cvmfs,trshaffer/cvmfs,cvmfs/cvmfs,djw8605/cvmfs