DO NOT MERGE Extending DNS event reporting

This adds hostname, array of addresses, total count of IP addresses
and uid to the existing pipeline.
Currently ignores the new data it receives, further work will be
done in the subsequent CLs.

Test: for now just the benchmarking, in the future unit and CTS

Bug: 29748723

(cherry picked from commit 33fa018898)

Change-Id: I3941b8d6fc1dd578e2af6ed4d3c3d0a722c39918

services/tests/servicestests/src/com/android/server/connectivity/NetdEventListenerServiceTest.java

@@ -158,7 +158,8 @@ public class NetdEventListenerServiceTest extends TestCase {
 
     void log(int netId, int[] latencies) {
         for (int l : latencies) {
-            mNetdEventListenerService.onDnsEvent(netId, EVENT_TYPE, RETURN_CODE, l);
+            mNetdEventListenerService.onDnsEvent(netId, EVENT_TYPE, RETURN_CODE, l, null, null, 0,
+                    0);
         }
     }