fix to ensure bucket is empty before returning it

git-svn-id: http://jclouds.googlecode.com/svn/trunk@1475 3d8758e0-26b5-11de-8745-db77d3ebf521

aws/s3/core/src/test/java/org/jclouds/aws/s3/S3IntegrationTest.java

@@ -355,6 +355,7 @@ public class S3IntegrationTest {
             iterator.remove();
          }
       }
+      assertEventuallyBucketEmpty(name);
    }
 
    protected String createScratchBucketInEU() throws InterruptedException, ExecutionException,