add restart delay for dmt-procmgt systemd service

systemd/dmt-procmgt@.service

@@ -4,6 +4,12 @@ After=network-online.target
 
 [Service]
 ExecStart=/usr/bin/procmgt --file:/home/dmtexec/procmgt/%i --runlist start
+# wait extra time because procmgt doesn't always wait for all it's
+# children before exiting.  We do this as an ExecStopPost so that it
+# happens in all cases, not just on auto-restarts.
+ExecStopPost=/bin/sleep 10
+# Restart=always
+# RestartSec=10
 
 [Install]
 WantedBy=default.target