add test for noticing a failure (CVM-997)
add test for noticing a failure (CVM-997)

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