unit file changes
    
    Intended use is with system presets to enable the following:
      iscsi.service - login of automatic node records
      iscsid.socket - start iscsid as needed for all iSCSI sessions
      iscsiuio.socket - start iscsiuio as needed for bnx2i or qedi
      iscsi-onboot.service - special handling of initramfs sessions
    
    The following are started automatically as needed:
      iscsid.service - needed for all iSCSI sessions
      iscsiuio.service - needed for bnx2i or qedi offload
      iscsi-init.service - create an iSCSI name if missing before starting iscsid
      iscsi-shutdown.service - ensure all non-boot sessions logout at shutdown