add integration test for extended attributes
add integration test for extended attributes

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