Switch the connectivity check to its own hostname.

Bug: 18467482
Bug: 18869302
Bug: 18924197
Change-Id: I1de478e9c8a165faf6f1bf81e042d1de9e03c3d5
diff --git a/services/core/java/com/android/server/connectivity/NetworkMonitor.java b/services/core/java/com/android/server/connectivity/NetworkMonitor.java
index 9fa362c..af5ed83 100644
--- a/services/core/java/com/android/server/connectivity/NetworkMonitor.java
+++ b/services/core/java/com/android/server/connectivity/NetworkMonitor.java
@@ -68,7 +68,7 @@
 public class NetworkMonitor extends StateMachine {
     private static final boolean DBG = true;
     private static final String TAG = "NetworkMonitor";
-    private static final String DEFAULT_SERVER = "clients3.google.com";
+    private static final String DEFAULT_SERVER = "connectivitycheck.android.com";
     private static final int SOCKET_TIMEOUT_MS = 10000;
     public static final String ACTION_NETWORK_CONDITIONS_MEASURED =
             "android.net.conn.NETWORK_CONDITIONS_MEASURED";