Parallel flag been added to the asynch-event-queue. Issue SGF-144.

src/test/java/org/springframework/data/gemfire/config/GemfireV7GatewayNamespaceTest.java

@@ -105,10 +105,11 @@ public class GemfireV7GatewayNamespaceTest extends RecreatingContextTest {
 		AsyncEventQueue aseq = ctx.getBean("async-event-queue", AsyncEventQueue.class);
 		assertEquals(10, aseq.getBatchSize());
 		assertTrue(aseq.isPersistent());
+		assertTrue(aseq.isParallel());
 		assertEquals("diskstore", aseq.getDiskStoreName());
 		assertEquals(50, aseq.getMaximumQueueMemory());
 	}
-
+	
 	@Test
 	public void testGatewaySender() throws Exception {
 		GatewaySenderFactoryBean gwsfb = ctx.getBean("&gateway-sender", GatewaySenderFactoryBean.class);

src/test/resources/org/springframework/data/gemfire/config/gateway-v7-ns.xml

@@ -37,7 +37,7 @@
     </gfe:partitioned-region>
     
     <gfe:async-event-queue id="async-event-queue" batch-size="10" persistent="true" disk-store-ref="diskstore" 
-    maximum-queue-memory="50">
+    maximum-queue-memory="50" parallel="true">
         <gfe:async-event-listener>
           <bean class="org.springframework.data.gemfire.config.GemfireV7GatewayNamespaceTest.TestAsyncEventListener"/>
         </gfe:async-event-listener>