INT-3152 Speed Up Build Times

Add a `@Rule` to skip long-runing tests during normal builds.

Add the rule to long-running tests in gemfire, ip, jms, jmx.

Add an environment variable `RUN_LONG_INTEGRATION_TESTS`; when set
to true, all tests are run.

Set the environment variable to true on all nightly builds.

Build now runs in 13 minutes on my 3 year old laptop.

spring-integration-jmx/src/test/java/org/springframework/integration_/mbeanexporterhelper/Int2307Tests.java

@@ -1,5 +1,5 @@
 /*
- * Copyright 2002-2011 the original author or authors.
+ * Copyright 2002-2013 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. You may obtain a copy of the License at
@@ -22,8 +22,11 @@ import javax.management.MBeanServer;
 import javax.management.MBeanServerFactory;
 import javax.management.ObjectInstance;
 
+import org.junit.Rule;
 import org.junit.Test;
+
 import org.springframework.context.support.ClassPathXmlApplicationContext;
+import org.springframework.integration.test.support.LongRunningIntegrationTest;
 import org.springframework.integration.test.util.TestUtils;
 import org.springframework.jmx.export.MBeanExporter;
 
@@ -34,6 +37,9 @@ import org.springframework.jmx.export.MBeanExporter;
  */
 public class Int2307Tests {
 
+	@Rule
+	public LongRunningIntegrationTest longTests = new LongRunningIntegrationTest();
+
 	@SuppressWarnings("unchecked")
 	@Test
 	public void testInt2307_DefaultMBeanExporter() throws Exception{