add get_providing_package() to utilities
add get_providing_package() to utilities

alhowaidi/cvmfsNDN,djw8605/cvmfs,MicBrain/cvmfs,MicBrain/cvmfs,djw8605/cvmfs,trshaffer/cvmfs,cvmfs/cvmfs,reneme/cvmfs,alhowaidi/cvmfsNDN,DrDaveD/cvmfs,djw8605/cvmfs,Moliholy/cvmfs,alhowaidi/cvmfsNDN,cvmfs/cvmfs,MicBrain/cvmfs,DrDaveD/cvmfs,cvmfs-testing/cvmfs,DrDaveD/cvmfs,Gangbiao/cvmfs,Moliholy/cvmfs,trshaffer/cvmfs,Moliholy/cvmfs,reneme/cvmfs,cvmfs/cvmfs,MicBrain/cvmfs,cvmfs/cvmfs,reneme/cvmfs,cvmfs-testing/cvmfs,alhowaidi/cvmfsNDN,cvmfs/cvmfs,Gangbiao/cvmfs,Gangbiao/cvmfs,reneme/cvmfs,trshaffer/cvmfs,MicBrain/cvmfs,reneme/cvmfs,alhowaidi/cvmfsNDN,trshaffer/cvmfs,DrDaveD/cvmfs,DrDaveD/cvmfs,djw8605/cvmfs,trshaffer/cvmfs,Gangbiao/cvmfs,Moliholy/cvmfs,Moliholy/cvmfs,Gangbiao/cvmfs,cvmfs-testing/cvmfs,DrDaveD/cvmfs,DrDaveD/cvmfs,cvmfs/cvmfs,cvmfs/cvmfs,cvmfs-testing/cvmfs,djw8605/cvmfs,cvmfs-testing/cvmfs