CC-4114: use liquidsoap shutdown() command to restart liquidsoap

-moved liquidsoap into its own init.d script. Still need to do some testing.

python_apps/pypo/install/pypo-initialize.py

@@ -109,6 +109,7 @@ try:
 
     if "airtime_service_start" in os.environ and os.environ["airtime_service_start"] == "t":
         print "* Waiting for pypo processes to start..."
+        subprocess.call("invoke-rc.d airtime-liquidsoap start-no-monit  > /dev/null 2>&1", shell=True)
         subprocess.call("invoke-rc.d airtime-playout start-no-monit  > /dev/null 2>&1", shell=True)
 
 except Exception, e: