Add sepolicy for mdns service

mdns service is a subset of netd-provided services, so it gets
the same treatment as netd_service or dnsresolver_service

Bug: 209894875
Test: built, flashed, booted
Change-Id: I33de769c4fff41e816792a34015a70f89e4b8a8c
diff --git a/private/netutils_wrapper.te b/private/netutils_wrapper.te
index ca3b515..cdc342d 100644
--- a/private/netutils_wrapper.te
+++ b/private/netutils_wrapper.te
@@ -17,6 +17,7 @@
 # For netutils (ndc) to be able to talk to netd
 allow netutils_wrapper netd_service:service_manager find;
 allow netutils_wrapper dnsresolver_service:service_manager find;
+allow netutils_wrapper mdns_service:service_manager find;
 binder_use(netutils_wrapper);
 binder_call(netutils_wrapper, netd);