我们使用方法分组来用dubbo，每个分组有自己权限，但是dubbo:registry标签 username & password 不生效，
让我不得不使用
```
    <dubbo:registry
            address="zookeeper://username:pwd@ip:port"
            group="xxx"/>
```
这种写法失效
```
    <dubbo:registry
            address="zookeeper://ip:port"
            username="username"
            password="pwd"/>
```

public void setOndisconnect(String ondisconnect) {
        this.ondisconnect = ondisconnect;
    }
    public String getScope() {
        return scope;
    }
    public void setScope(String scope) {
        this.scope = scope;
    }
    public MetadataReportConfig getMetadataReportConfig() {
        return metadataReportConfig;
    }
    public void setMetadataReportConfig(MetadataReportConfig metadataReportConfig) {
        this.metadataReportConfig = metadataReportConfig;
    }
    public MetricsConfig getMetrics() {
        return metrics;
    }
    public void setMetrics(MetricsConfig metrics) {
        this.metrics = metrics;
    }
    @Parameter(key = TAG_KEY, useKeyAsProperty = false)
    public String getTag() {
        return tag;
    }
    public void setTag(String tag) {
        this.tag = tag;
    }
}