Fix system boot slow down caused by iscsi script
    
    Revert
    commit 96534fee83e9bf86363eb09d69c07e7918446322
    Author: Mike Christie <michaelc@cs.wisc.edu>
    Date:   Sat Feb 4 03:00:00 2012 -0600
    
        Fix iscsi NM use
    
    If the network is not up and not coming up then this will
    cause multi-minute long boot delays.