EventListenerMethodProcessor accepts internal configuration classes

Issue: SPR-17160

spring-context/src/test/java/org/springframework/context/event/AnnotationDrivenEventListenerTests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2017 the original author or authors.
+ * Copyright 2002-2018 the original author or authors.
  *
  * Licensed under the Apache License, Version 2.0 (the "License");
  * you may not use this file except in compliance with the License.
@@ -951,7 +951,7 @@ public class AnnotationDrivenEventListenerTests {
 	}
 
 
-	@Component
+	@Configuration
 	static class OrderedTestListener extends TestEventListener {
 
 		public final List<String> order = new ArrayList<>();