fix integration test script for ubuntu
fix integration test script for ubuntu

cvmfs/cvmfs,DrDaveD/cvmfs,djw8605/cvmfs,djw8605/cvmfs,Gangbiao/cvmfs,DrDaveD/cvmfs,DrDaveD/cvmfs,cvmfs/cvmfs,DrDaveD/cvmfs,DrDaveD/cvmfs,DrDaveD/cvmfs,cvmfs/cvmfs,DrDaveD/cvmfs,djw8605/cvmfs,Gangbiao/cvmfs,djw8605/cvmfs,djw8605/cvmfs,Gangbiao/cvmfs,cvmfs/cvmfs,cvmfs/cvmfs,Gangbiao/cvmfs,cvmfs/cvmfs,cvmfs/cvmfs,Gangbiao/cvmfs