ConnectivityMonitor sepolicy update: Add audio_server permission

  ConnectivityMonitor requires the current audio route for voice calls.
  Error fixed:
  auditd  : avc:  denied  { find } for service=media.audio_policy pid=4056
  uid=1001 scontext=u:r:con_monitor_app:s0:c233,c259,c512,c768
  tcontext=u:object_r:audioserver_service:s0 tclass=service_manager
  permissive=0

Bug: 3619416

Change-Id: I7fa6a12153e0d1098c140b8b58d9786f1a701e22
diff --git a/sepolicy/con_monitor.te b/sepolicy/con_monitor.te
index f38500b..2b8732b 100644
--- a/sepolicy/con_monitor.te
+++ b/sepolicy/con_monitor.te
@@ -6,3 +6,4 @@
 set_prop(con_monitor_app, tel_mon_prop)
 allow con_monitor_app app_api_service:service_manager find;
 allow con_monitor_app radio_service:service_manager find;
+allow con_monitor_app audioserver_service:service_manager find;