- [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

public Collection<ServiceConfigBase> getServices() {
        return getConfigs(getTagName(ServiceConfigBase.class));
    }
    public <T> ServiceConfigBase<T> getService(String id) {
        return getConfig(getTagName(ServiceConfigBase.class), id);
    }
    
    public void addReference(ReferenceConfigBase<?> referenceConfig) {
        addConfig(referenceConfig);
    }
    public void addReferences(Iterable<ReferenceConfigBase<?>> referenceConfigs) {
        referenceConfigs.forEach(this::addReference);
    }
    public Collection<ReferenceConfigBase<?>> getReferences() {
        return getConfigs(getTagName(ReferenceConfigBase.class));
    }
    public <T> ReferenceConfigBase<T> getReference(String id) {
        return getConfig(getTagName(ReferenceConfigBase.class), id);
    }
    protected static Set<String> getSubProperties(Map<String, String> properties, String prefix) {
        return properties.keySet().stream().filter(k -> k.contains(prefix)).map(k -> {
            k = k.substring(prefix.length());
            return k.substring(0, k.indexOf("."));
        }).collect(Collectors.toSet());
    }
    public void refreshAll() {
        write(() -> {
            
            getApplication().ifPresent(ApplicationConfig::refresh);
            getMonitor().ifPresent(MonitorConfig::refresh);