Factorize screenpanel startup scripts

screen_panel

@@ -7,4 +7,5 @@ echo "ScreenPanel"
      -pipeline_server=sf-daqsync-01:8889 \
      -camera_server=sf-daqsync-01:8888 \
      -clog=FINE \
+     -persist_camera \
      ${1+"$@"}