INT-2421 Support 'container-class' on JMS MDCA

Convenience for configuring a custom listener container - avoids
having to transfer many attributes from the adapter to the
bean when switching to a custom implementation.

JIRA: https://jira.springsource.org/browse/INT-2421

INT-2421 Polishing - PR Comments

Also auto-create adapter channel if necessary.

spring-integration-http/src/main/java/org/springframework/integration/http/config/HttpInboundEndpointParser.java

@@ -17,6 +17,7 @@
 package org.springframework.integration.http.config;
 
 import java.util.List;
+
 import org.w3c.dom.Element;
 
 import org.springframework.beans.factory.BeanDefinitionStoreException;
@@ -74,7 +75,7 @@ public class HttpInboundEndpointParser extends AbstractSingleBeanDefinitionParse
 			throws BeanDefinitionStoreException {
 		String id = super.resolveId(element, definition, parserContext);
 
-		if (!element.hasAttribute(getInputChannelAttributeName())) {
+		if (!this.expectReply && !element.hasAttribute("channel")) {
 			// the created channel will get the 'id', so the adapter's bean name includes a suffix
 			id = id + ".adapter";
 		}