Interface change: New option '@<server host>' to pbs_rstat to stat all reservations from a remote PBS server

• Visibility: Public
• Change Control: Stable
• Details:
  • The option will work similar to the @<server host> option in qstat to query jobs from a remote PBS server.
  • Usage examples:
    • pbs_rstat @server1: This will stat all reservations from the PBS server hosted on 'server1'.
    • pbs_rstat -f @server1: This will stat all reservations, verbosely, from the PBS server hosted on 'server1'