Disable service and cluster level customization in client registerInstance method

[nkorange]

We consider to close the feature of setting service level and cluster level properties in register instance method. This doesn't mean service edition is disabled in client, it's just removed from register instance method.

我们考虑关闭在客户端注册实例时可以编辑服务和集群的自定义配置的功能。但是这并不意味着客户端无法创建服务，我们会考虑由单独的接口来提供服务的创建和编辑。

The consideration is that service is relative static resource and we don't suggest client registration of service. Service should be created and updated on Nacos console and this feature will be released in the coming version(refer to #177 ).

我们认为服务是相对静态的资源并不会进行频繁的变更，因此服务不应该在客户端来编辑，而是应该在控制台上进行操作。在控制台创建和删除服务的功能将会在接下来的版本发布（参见 #177 ）。