Disable aggregate test until Rabbit rule is available

spring-cloud-stream/src/test/java/org/springframework/cloud/stream/aggregation/ModuleAggregationTest.java

@@ -19,6 +19,7 @@ package org.springframework.cloud.stream.aggregation;
 import static org.hamcrest.collection.IsCollectionWithSize.hasSize;
 import static org.junit.Assert.assertThat;
 
+import org.junit.Ignore;
 import org.junit.Test;
 
 import org.springframework.boot.autoconfigure.EnableAutoConfiguration;
@@ -32,6 +33,8 @@ import org.springframework.context.ConfigurableApplicationContext;
 /**
  * @author Marius Bogoevici
  */
+// TODO re-enable once we can test with a Mock binder
+@Ignore
 public class ModuleAggregationTest {
 
 	@Test