Refactor: harden call to `create_config_files_for_new_repository()`
Refactor: harden call to `create_config_files_for_new_repository()`

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