CC-3575: Use invoke-rc.d to start and stop services, rather than calling init scripts directly

-fixed

python_apps/media-monitor/install/media-monitor-initialize.py

@@ -17,10 +17,10 @@ try:
     #Start media-monitor daemon
     print "* Waiting for media-monitor processes to start..."
     """
-    p = Popen("/etc/init.d/airtime-media-monitor stop", shell=True)
+    p = Popen("invoke-rc.d airtime-media-monitor stop", shell=True)
     sts = os.waitpid(p.pid, 0)[1]
     """
-    p = Popen("/etc/init.d/airtime-media-monitor start-no-monit", shell=True)
+    p = Popen("invoke-rc.d airtime-media-monitor start-no-monit", shell=True)
     sts = os.waitpid(p.pid, 0)[1]
 except Exception, e:
     print e