Fix SimpleMessageListenerContainerLongTests fails

https://build.spring.io/browse/PLATFORM-COM2-JOB1-605

* A couple tests doesn't send to the proper queue for the
consecutive consumers start logic to be triggered properly
* The `testIncreaseMinAtMax()` used "too long"
`startConsumerMinInterval` therefore existing consumers were able to
consumer all the messages

spring-rabbit/src/test/java/org/springframework/amqp/rabbit/listener/SimpleMessageListenerContainerLongTests.java

@@ -98,7 +98,7 @@ public class SimpleMessageListenerContainerLongTests {
 			container.setMaxConcurrentConsumers(3);
 			RabbitTemplate template = new RabbitTemplate(singleConnectionFactory);
 			for (int i = 0; i < 20; i++) {
-				template.convertAndSend("foo", "foo");
+				template.convertAndSend(QUEUE, "foo");
 			}
 			waitForNConsumers(container, 2);        // increased consumers due to work
 			waitForNConsumers(container, 1, 20000); // should stop the extra consumer after 10 seconds idle
@@ -106,10 +106,10 @@ public class SimpleMessageListenerContainerLongTests {
 			waitForNConsumers(container, 3);
 			container.stop();
 			waitForNConsumers(container, 0);
-			singleConnectionFactory.destroy();
 		}
 		finally {
 			container.stop();
+			singleConnectionFactory.destroy();
 		}
 	}
 
@@ -141,6 +141,7 @@ public class SimpleMessageListenerContainerLongTests {
 		for (int i = 0; i < 20; i++) {
 			admin.deleteQueue("testAddQueuesAndStartInCycle" + i);
 		}
+
 		connectionFactory.destroy();
 	}
 
@@ -148,7 +149,7 @@ public class SimpleMessageListenerContainerLongTests {
 	public void testIncreaseMinAtMax() throws Exception {
 		final SingleConnectionFactory singleConnectionFactory = new SingleConnectionFactory("localhost");
 		SimpleMessageListenerContainer container = new SimpleMessageListenerContainer(singleConnectionFactory);
-		container.setStartConsumerMinInterval(100);
+		container.setStartConsumerMinInterval(1);
 		container.setConsecutiveActiveTrigger(1);
 		container.setMessageListener((MessageListener) m -> {
 			try {
@@ -171,6 +172,9 @@ public class SimpleMessageListenerContainerLongTests {
 		container.setConcurrentConsumers(4);
 		Set<?> consumers = (Set<?>) TestUtils.getPropertyValue(container, "consumers");
 		assertThat(consumers.size(), equalTo(5));
+
+		container.stop();
+		singleConnectionFactory.destroy();
 	}
 
 	@Test
@@ -200,6 +204,9 @@ public class SimpleMessageListenerContainerLongTests {
 		container.setConcurrentConsumers(1);
 		Set<?> consumers = (Set<?>) TestUtils.getPropertyValue(container, "consumers");
 		assertThat(consumers.size(), equalTo(3));
+
+		container.stop();
+		singleConnectionFactory.destroy();
 	}
 
 	@Test
@@ -230,6 +237,9 @@ public class SimpleMessageListenerContainerLongTests {
 		container.setMaxConcurrentConsumers(1);
 		Set<?> consumers = (Set<?>) TestUtils.getPropertyValue(container, "consumers");
 		assertThat(consumers.size(), equalTo(1));
+
+		container.stop();
+		singleConnectionFactory.destroy();
 	}
 
 	public void handleMessage(String foo) {
@@ -240,7 +250,9 @@ public class SimpleMessageListenerContainerLongTests {
 		this.waitForNConsumers(container, n, 10000);
 	}
 
-	private void waitForNConsumers(SimpleMessageListenerContainer container, int n, int howLong) throws InterruptedException {
+	private void waitForNConsumers(SimpleMessageListenerContainer container, int n, int howLong)
+			throws InterruptedException {
+
 		int i = 0;
 		while (true) {
 			Set<?> consumers = (Set<?>) TestUtils.getPropertyValue(container, "consumers");