Bug 470576 - Migration could do addition checks before commiting actions
    
    https://bugzilla.redhat.com/show_bug.cgi?id=470576
    
    The migration script can fail for various reasons leaving the server
    in an inconsistent state. Sometimes a manual cleanup is required before
    the script can be run again. Since there is no easy way to revert the
    changes done to the server, the script has been modified such that it
    removes the server that fails to be migrated. Once the cause of the
    failure has been resolved the script can be run again.