- [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

throw new IllegalArgumentException("Unsupported generic type " + generic);
        }
    }
    /**
     * @return
     * @deprecated instead, use the parameter <b>scope</> to judge if it's in jvm, scope=local
     */
    @Deprecated
    public Boolean isInjvm() {
        return injvm;
    }
    /**
     * @param injvm
     * @deprecated instead, use the parameter <b>scope</b> to judge if it's in jvm, scope=local
     */
    @Deprecated
    public void setInjvm(Boolean injvm) {
        this.injvm = injvm;
    }
    @Override
    @Parameter(key = REFERENCE_FILTER_KEY, append = true)
    public String getFilter() {
        return super.getFilter();
    }
    @Override
    @Parameter(key = INVOKER_LISTENER_KEY, append = true)
    public String getListener() {
        return super.getListener();
    }
    @Override