No Bug - Log update data for fennec (when not using Google Play). r=nalexander

Differential Revision: https://phabricator.services.mozilla.com/D15869

--HG--
extra : moz-landing-system : lando

mobile/android/base/java/org/mozilla/gecko/updater/UpdateServiceHelper.java

@@ -200,6 +200,8 @@ public class UpdateServiceHelper {
             .replace("%DISTRIBUTION%", "default")
             .replace("%DISTRIBUTION_VERSION%", "default")
             .replace("%MOZ_VERSION%", AppConstants.MOZILLA_VERSION);
+            
+        Log.i(LOGTAG, "AUS Url is: " + url);
 
         try {
             return new URI(url);