Increase Kafka receive patience to 30s

When receiving messages from Kafka in our tests, they may come
a bit later than we thought and we risk to make tests flaky.

Limit raised to 30s for declaring that we have not received a message
and thus the test must fail.

Change-Id: If9b738e38143eb1bce242343c3e4e3b0efeecc64
diff --git a/src/test/java/com/googlesource/gerrit/plugins/multisite/kafka/consumer/EventConsumerIT.java b/src/test/java/com/googlesource/gerrit/plugins/multisite/kafka/consumer/EventConsumerIT.java
index 98953bf..993c138 100644
--- a/src/test/java/com/googlesource/gerrit/plugins/multisite/kafka/consumer/EventConsumerIT.java
+++ b/src/test/java/com/googlesource/gerrit/plugins/multisite/kafka/consumer/EventConsumerIT.java
@@ -44,7 +44,7 @@
     sysModule =
         "com.googlesource.gerrit.plugins.multisite.kafka.consumer.EventConsumerIT$KafkaTestContainerModule")
 public class EventConsumerIT extends LightweightPluginDaemonTest {
-  private static final int QUEUE_POLL_TIMEOUT_MSECS = 2000;
+  private static final int QUEUE_POLL_TIMEOUT_MSECS = 30000;
 
   public static class KafkaTestContainerModule extends LifecycleModule {