halvm: Fix bug 593108: lvm agent incorrectly reports vg is in volume_list
    
    If the name of the VG controlled by rgmanager is a substring of the name
    of the node, the HA-LVM script will complain of an improper setup.
    
    The fix is to also look for the associated quotes that are necessary when
    specifying strings in lvm.conf.  Thanks to John Ruemker for the patch.