在properties里面配置多个
dubbo.registry.address=xxxxxx
dubbo.registry.aaa.address=xxxxxx
在xml里面配置
<dubbo:reference id="xx" interface="xxxx" version="1.0.0" registry="aaa"/>
就会报错 Too much registries found
实际上配置的dubbo.registry.aaa.address=xxxxxx 并不能根据aaa来匹配
![image](https://user-images.githubusercontent.com/54841788/68372350-9d4e9700-017b-11ea-95c9-425b66cce6fe.png)

org.apache.dubbo.config.AbstractInterfaceConfig.convertRegistryIdsToRegistries()
if (((List)tmpRegistries).size() > ids.length) {
                throw new IllegalStateException("Too much registries found, the registries assigned to this service are :" + this.registryIds + ", but got " + ((List)tmpRegistries).size() + " registries!");
            }
是不是应该需要在 tmpRegistries 里面根据 id 取对应的 Registries
/**
     * The interface class of the exported service
     */
    protected Class<?> interfaceClass;
    /**
     * The reference of the interface implementation
     */
    protected T ref;
    /**
     * The service name
     */
    protected String path;
    /**
     * The provider configuration
     */
    protected ProviderConfig provider;
    /**
     * The providerIds
     */
    protected String providerIds;
    /**
     * whether it is a GenericService
     */
    protected volatile String generic;
    protected ServiceMetadata serviceMetadata;
    public ServiceConfigBase() {
        serviceMetadata = new ServiceMetadata();
        serviceMetadata.addAttribute("ORIGIN_CONFIG", this);
    }
    public ServiceConfigBase(Service service) {