update systemd service files for new daqd architecture

We now have a single daqd service, and separate services for all the
new front end transport components ({zmq,omx,dix}_{xmit,recv},
local_dc, etc.).

The assumption for all the transport services is that the
/etc/advligorts/env file exists and defines environment variables
specifying the command line arguments for each service, e.g.:

ZMQ_XMIT_ARGS=-e eth0 -s x1tst

The daqd service expects configuration at /etc/advligorts/daqdrc.

support/systemd/daqd@.service → support/systemd/rts-daqd.service

 [Unit]
-Description=Advanced LIGO RTS daqd_%i
+Description=Advanced LIGO RTS DAQD
 After=network-online.target
 
 [Service]
 User=controls
-ExecStart=/bin/sh -c "/usr/bin/daqd_%i -c /etc/advligorts/daqdrc.%i"
+ExecStart=/usr/bin/daqd_shmem -c /etc/advligorts/daqdrc
 Restart=always
 
 [Install]

support/systemd/rts-dix_recv.service

+[Unit]
+Description=Advanced LIGO RTS Dolphin IX receiver
+After=network-online.target
+
+[Service]
+User=controls
+Type=simple
+EnvironmentFile=/etc/advligorts/env
+ExecStart=/usr/bin/dix_recv $DIX_RECV_ARGS
+StandardOutput=journal
+StandardError=journal
+Restart=always
+RestartSec=5
+StartLimitInterval=0
+
+[Install]
+WantedBy=multi-user.target

support/systemd/rts-dix_xmit.service

+[Unit]
+Description=Advanced LIGO RTS Dolphin IX transmitter
+After=network-online.target
+
+[Service]
+User=controls
+Type=simple
+EnvironmentFile=/etc/advligorts/env
+ExecStart=/usr/bin/dix_xmit $DIX_XMIT_ARGS
+StandardOutput=journal
+StandardError=journal
+Restart=always
+RestartSec=5
+StartLimitInterval=0
+
+[Install]
+WantedBy=multi-user.target

support/systemd/rts-local_dc.service

+[Unit]
+Description=Advanced LIGO RTS local data concentrator
+After=network-online.target
+
+[Service]
+User=controls
+Type=simple
+EnvironmentFile=/etc/advligorts/env
+ExecStart=/usr/bin/local_dc $LOCAL_DC_ARGS
+StandardOutput=journal
+StandardError=journal
+Restart=always
+RestartSec=5
+StartLimitInterval=0
+
+[Install]
+WantedBy=multi-user.target

support/systemd/mx_stream.service → support/systemd/rts-omx_recv.service

 [Unit]
-Description=Advanced LIGO RTS front end mx stream
+Description=Advanced LIGO RTS OpenMX receiver
 After=network-online.target
 
 [Service]
 User=controls
 Type=simple
-ExecStart=/etc/advligorts/mx_stream_exec
+EnvironmentFile=/etc/advligorts/env
+ExecStart=/usr/bin/omx_recv $OMX_RECV_ARGS
 StandardOutput=journal
 StandardError=journal
 Restart=always

support/systemd/rts-omx_xmit.service

+[Unit]
+Description=Advanced LIGO RTS OpenMX transmitter
+After=network-online.target
+
+[Service]
+User=controls
+Type=simple
+EnvironmentFile=/etc/advligorts/env
+ExecStart=/usr/bin/omx_xmit $OMX_XMIT_ARGS
+StandardOutput=journal
+StandardError=journal
+Restart=always
+RestartSec=5
+StartLimitInterval=0
+
+[Install]
+WantedBy=multi-user.target

support/systemd/rts-zmq_recv.service

+[Unit]
+Description=Advanced LIGO RTS ZeroMQ receiver
+After=network-online.target
+
+[Service]
+User=controls
+Type=simple
+EnvironmentFile=/etc/advligorts/env
+ExecStart=/usr/bin/zmq_recv $ZMQ_RECV_ARGS
+StandardOutput=journal
+StandardError=journal
+Restart=always
+RestartSec=5
+StartLimitInterval=0
+
+[Install]
+WantedBy=multi-user.target

support/systemd/rts-zmq_xmit.service

+[Unit]
+Description=Advanced LIGO RTS ZeroMQ transmitter
+After=network-online.target
+
+[Service]
+User=controls
+Type=simple
+EnvironmentFile=/etc/advligorts/env
+ExecStart=/usr/bin/zmq_xmit $ZMQ_XMIT_ARGS
+StandardOutput=journal
+StandardError=journal
+Restart=always
+RestartSec=5
+StartLimitInterval=0
+
+[Install]
+WantedBy=multi-user.target