rtcds scripts should provide commands to add, remove models from DAQ
On the stand-alone test stands, users need an easier way to add/remove models from the local daqd. At present, they need to
- edit /etc/advligorts/systemd_env_ adding to local_dc_args
- edit /etc/advligorts/master adding in DAQ and testpoint channel lists for a model
- manually restarting rts-local_dc and rts-daqd services using systemctl
Perhaps we could add 'rtcds add ', 'rtcds del ' which does all this editing and the local_dc, daqd restarts