Adjusting the default priorities of local_dc rts-transport@ and rts-epics@

This is to protect these critical processes in the FE system to make sure they do not get starved for CPU if there are other processes monopolizing the processor.

support/systemd/rts-epics@.service

@@ -6,3 +6,4 @@ PartOf=rts@%i.target
 User=advligorts
 UMask=0002
 ExecStart=/usr/bin/rts_epics_exec %i
+Nice=-10

support/systemd/rts-local_dc.service

@@ -9,6 +9,8 @@ EnvironmentFile=-/etc/advligorts/systemd_env_%H
 ExecStart=/usr/bin/local_dc $local_dc_args
 Restart=always
 RestartSec=5
+CPUSchedulingPolicy=rr
+CPUSchedulingPriority=80
 
 [Install]
 WantedBy=multi-user.target

support/systemd/rts-transport@.service

@@ -9,6 +9,8 @@ EnvironmentFile=-/etc/advligorts/systemd_env_%H
 ExecStart=/usr/bin/%i $%i_args
 Restart=always
 RestartSec=5
+CPUSchedulingPolicy=rr
+CPUSchedulingPriority=60
 
 [Install]
 WantedBy=multi-user.target