- [x] I have searched the [issues](https://github.com/apache/dubbo/issues) of this repository and believe that this is not a duplicate.
- [x] I have checked the [FAQ](https://github.com/apache/dubbo/blob/master/FAQ.md) of this repository and believe that this is not a duplicate.

### Environment

* Dubbo version: 2.7.5-SNAPSHOT
* Operating System version: macos
* Java version: 1.8.0_131

### Steps to reproduce this issue

We could run the following UT, then we could find the issue:

```
        ApplicationConfig application = new ApplicationConfig("provider");

        ServiceConfig<DemoService> service = new ServiceConfig<DemoService>();
        service.setProtocol(new ProtocolConfig("dubbo", 20880));
        service.setRegistry(new RegistryConfig(RegistryConfig.NO_AVAILABLE));
        service.setInterface(DemoService.class);
        service.setRef(new DemoServiceImpl());

        ConsumerConfig consumer = new ConsumerConfig();
        consumer.setLazy(true);

        ReferenceConfig<DemoService> reference = new ReferenceConfig<DemoService>();
        reference.setConsumer(consumer);
        reference.setRegistry(new RegistryConfig(RegistryConfig.NO_AVAILABLE));
        reference.setInterface(DemoService.class);
        reference.setUrl("dubbo://" + NetUtils.getLocalHost() + ":20880?" + DemoService.class.getName());

        DubboBootstrap bootstrap = DubboBootstrap.getInstance()
            .application(application)
            .service(service)
            .reference(reference)
            .start();

        Assert.assertEquals("true", reference.toUrls().get(0).getParameter("lazy"));
```

### Expected Result

Expected "lazy" : true

### Actual Result

Actual "lazy": false

Lock readLock = lock.readLock();
        V value = null;
        try {
            readLock.lock();
            value = callable.call();
        } catch (Throwable e) {
            throw new RuntimeException(e);
        } finally {
            readLock.unlock();
        }
        return value;
    }
    private static void checkDuplicate(AbstractConfig oldOne, AbstractConfig newOne) throws IllegalStateException {
        if (oldOne != null && !oldOne.equals(newOne)) {
            String configName = oldOne.getClass().getSimpleName();
            logger.warn("Duplicate Config found for " + configName + ", you should use only one unique " + configName + " for one application.");
        }
    }
    private static Map newMap() {
        return new HashMap<>();
    }
    static <C extends AbstractConfig> void addIfAbsent(C config, Map<String, C> configsMap, boolean unique)
            throws IllegalStateException {
        if (config == null || configsMap == null) {
            return;
        }
        if (unique) { 
            configsMap.values().forEach(c -> {
                checkDuplicate(c, config);
            });