@AfterClass
	public static void afterClass() throws InterruptedException {
		distributedTestSupport.shutdownAll();
	}
Stop the {@link DistributedTestSupport} used by test classes.

@see DistributedTestSupport#shutdownAll
spring-xd-distributed-test/src/test/java/org/springframework/xd/distributed/test/DistributedTestSuite.java