- [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: 2.7.1
* Operating System version: windows10
* Java version: java8

### Steps to reproduce this issue

I run the [code](https://github.com/dubbo-x/example/tree/master/java-dubbo-consul2) by follow steps:

- docker run -p 8400:8400 -p 8500:8500 -p 8600:8600 -d consul
- run provider
- run consumer

### Actual Result

- provider runs ok
- consumer fail with `no provider available`

So I trace the register and subscribe process:

- provider register result show below

![register](https://user-images.githubusercontent.com/16648345/59485088-f48b5c80-8ea6-11e9-9be1-63a02472150d.png)

and we can see it use `url.getServiceInterface()` as service name (this example is `dubbo.DubboService`)

https://github.com/apache/dubbo/blob/6f3a05ca820dc6e3dab127cd9a5daa375709347a/dubbo-registry/dubbo-registry-consul/src/main/java/org/apache/dubbo/registry/consul/ConsulRegistry.java#L255-L265

- however if we add group and version info, consumer will use `url.getServiceKey()` to find service (this example is `dubbo-x/dubbo.DubboService:0.0.1`), which doesn't equal the service name

https://github.com/apache/dubbo/blob/6f3a05ca820dc6e3dab127cd9a5daa375709347a/dubbo-registry/dubbo-registry-consul/src/main/java/org/apache/dubbo/registry/consul/ConsulRegistry.java#L141-L144

So consumer will not find the service if we add group and version info. Is my configuration wrong?

@Override
    public void subscribe(URL url, NotifyListener listener) {
        if (isProviderSide(url)) {
            return;
        }
        super.subscribe(url, listener);
    }
    @Override
    public void doSubscribe(URL url, NotifyListener listener) {
        Long index;
        List<URL> urls;
        if (ANY_VALUE.equals(url.getServiceInterface())) {
            Response<Map<String, List<String>>> response = getAllServices(-1, buildWatchTimeout(url));
            index = response.getConsulIndex();
            List<HealthService> services = getHealthServices(response.getValue());
            urls = convert(services, url);
        } else {
            String service = url.getServiceKey();
            Response<List<HealthService>> response = getHealthServices(service, -1, buildWatchTimeout(url));
            index = response.getConsulIndex();
            urls = convert(response.getValue(), url);
        }
        notify(url, listener, urls);
        ConsulNotifier notifier = notifiers.computeIfAbsent(url, k -> new ConsulNotifier(url, index));
        notifierExecutor.submit(notifier);
    }
    @Override
    public void unsubscribe(URL url, NotifyListener listener) {
        if (isProviderSide(url)) {
            return;