- [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?

}
    private NewService.Check buildCheck(URL url) {
        NewService.Check check = new NewService.Check();
        check.setTtl((checkPassInterval / 1000) + "s");
        check.setDeregisterCriticalServiceAfter(url.getParameter(DEREGISTER_AFTER, DEFAULT_DEREGISTER_TIME));
        return check;
    }
    private int buildWatchTimeout(URL url) {
        return url.getParameter(WATCH_TIMEOUT, DEFAULT_WATCH_TIMEOUT) / 1000;
    }
    private class ConsulNotifier implements Runnable {
        private URL url;
        private long consulIndex;
        private boolean running;
        ConsulNotifier(URL url, long consulIndex) {
            this.url = url;
            this.consulIndex = consulIndex;
            this.running = true;
        }
        @Override
        public void run() {
            while (this.running) {
                if (ANY_VALUE.equals(url.getServiceInterface())) {
                    processServices();
                } else {
                    processService();
                }
            }
        }
        private void processService() {