Fix test (exclude commons refresh processing if not available)

spring-cloud-netflix-core/src/main/java/org/springframework/cloud/netflix/eureka/EurekaDiscoveryClientConfiguration.java

@@ -158,11 +158,18 @@ public class EurekaDiscoveryClientConfiguration implements SmartLifecycle, Order
 		EurekaDiscoveryClientConfiguration.this.start();
 	}
 
+	@Configuration
+	@ConditionalOnClass(EnvironmentChangeEvent.class)
+	protected static class EurekaClientConfigurationRefresher {
+		@Autowired
+		private EurekaDiscoveryClientConfiguration clientConfig;
+
 		@EventListener(EnvironmentChangeEvent.class)
 		public void onApplicationEvent(EnvironmentChangeEvent event) {
 			// register in case meta data changed
-		stop();
-		start();
+			this.clientConfig.stop();
+			this.clientConfig.start();
+		}
 	}
 
 	@EventListener(ContextClosedEvent.class)