TestEventPublisher: double wait for event to 1000ms

Slower CI machines seems to need more time before the event is
published.

Change-Id: Icb4d04830c245cb057b53cdf557f8b589375b290

src/test/java/com/googlesource/gerrit/plugins/eventseiffel/TestEventPublisher.java

diff --git a/src/test/java/com/googlesource/gerrit/plugins/eventseiffel/TestEventPublisher.java b/src/test/java/com/googlesource/gerrit/plugins/eventseiffel/TestEventPublisher.java
index 7b4569e..e7c8869 100644
--- a/src/test/java/com/googlesource/gerrit/plugins/eventseiffel/TestEventPublisher.java
+++ b/src/test/java/com/googlesource/gerrit/plugins/eventseiffel/TestEventPublisher.java
@@ -34,7 +34,7 @@
 @Ignore
 public class TestEventPublisher implements Runnable, EiffelEventHub.Consumer {
   /* Milliseconds after which the publisher-thread is expected to have handled the event. */
-  public static int MILLIS_TO_WAIT = 500;
+  public static int MILLIS_TO_WAIT = 1000;
 
   Map<EventKey, EiffelEvent> publishedEvents = Maps.newConcurrentMap();
   List<EventKey> actualOrder = Lists.newArrayList();