Upgrade to Reactor 3.0 and start building against SI 5.0 snapshots

Closes gh-7301
See gh-7029

spring-boot-cli/test-samples/integration_auto_test.groovy

@@ -1,12 +1,14 @@
-@SpringBootTest(classes=ReactorApplication, webEnvironment=WebEnvironment.RANDOM_PORT)
-class RestTests {
+import org.springframework.jms.core.JmsTemplate
+
+@SpringBootTest(classes=JmsExample)
+class JmsTests {
 
 	@Autowired
-	EventBus eventBus
+	JmsTemplate jmsTemplate
 
 	@Test
 	void test() {
-		assertNotNull(eventBus)
+		assertNotNull(jmsTemplate)
 	}
 
 }

spring-boot-cli/test-samples/jms.groovy

@@ -0,0 +1,31 @@
+@Grab("spring-boot-starter-artemis")
+@Grab("artemis-jms-server")
+import java.util.concurrent.CountDownLatch
+
+@Log
+@Configuration
+@EnableJms
+class JmsExample implements CommandLineRunner {
+
+	private CountDownLatch latch = new CountDownLatch(1)
+
+	@Autowired
+	JmsTemplate jmsTemplate
+
+	void run(String... args) {
+		def messageCreator = { session ->
+			session.createObjectMessage("Greetings from Spring Boot via Artemis")
+		} as MessageCreator
+		log.info "Sending JMS message..."
+		jmsTemplate.send("spring-boot", messageCreator)
+		log.info "Send JMS message, waiting..."
+		latch.await()
+	}
+
+	@JmsListener(destination = 'spring-boot')
+	def receive(String message) {
+		log.info "Received ${message}"
+		latch.countDown()
+	}
+
+}

spring-boot-cli/test-samples/reactor.groovy

@@ -1,4 +0,0 @@
-@Configuration
-@EnableReactor
-class ReactorApplication {
-}