diskmon_sim_ops: Diskmon simulation events

Usage
-------
diskmon_sim_ops [ dskmsimopc      < none | freeze_diskmon_thrd | crash_diskmon_thrd | sleep_diskmon_thrd | stallrds_diskmon2cell | stalltcp_diskmon2cell | toutsmq_diskmon2cell |
                                   tcpstorm_diskmon2cell | slowtcpmon_diskmon2cell > ]
   dskmsimloc      <string>[100],
   dskmsimcell     <string>[100],
   dskmsimstime    <ub4>