AbstractDaemonTest: Record events as the admin user

By default the regular user cannot see events on refs/meta/config.

Use the admin user instead, rather than having to explicitly give
permissions to the regular user as needed.

Change-Id: I56034667c44d76a6e5a320ad215a27c168c772dd

gerrit-acceptance-framework/src/test/java/com/google/gerrit/acceptance/AbstractDaemonTest.java

@@ -258,7 +258,7 @@ public abstract class AbstractDaemonTest {
 
   @Before
   public void startEventRecorder() {
-    eventRecorder = eventRecorderFactory.create(user);
+    eventRecorder = eventRecorderFactory.create(admin);
   }
 
   @After