未使用address-server lookup时health接口返回响应'DOWN:address server down'

[zhanggang807]

Describe the bug
未配置使用address-server lookup时health接口返回响应'DOWN:address server down'

Expected behavior
未配置使用address-server lookup时health接口返回响应'UP'

Actually behavior
未配置使用address-server lookup时health接口返回响应'DOWN:address server down'

How to Reproduce
Steps to reproduce the behavior:

1. 集群部署，使用cluster.conf配置集群节点
2. application.properties文件中未启用nacos.core.member.lookup.type配置
3. 访问接口curl http://localhost:8848/nacos/v1/cs/health

Desktop (please complete the following information):

• OS: centos
• Version nacos-server 2.0.2, nacos-client 2.0.2
• Module [e.g. naming/config]
• SDK [e.g. original, spring-cloud-alibaba-nacos, dubbo]

Additional context
com.alibaba.nacos.config.server.controller.HealthController#getHealth 关于isAddressServerHealth的判断逻辑需要优化一下

private boolean isAddressServerHealthy() {
        Map<String, Object> info = memberManager.getLookup().info();
        return info != null && info.get("addressServerHealth") != null && Boolean
                .parseBoolean(info.get("addressServerHealth").toString());
    }

非AddressServerMemberLookup时 addressServerHealth不是true，所以影响了health接口的响应内容

    @GetMapping
    public String getHealth() {
        // TODO UP DOWN WARN
        StringBuilder sb = new StringBuilder();
        String dbStatus = dataSourceService.getHealth();
        boolean addressServerHealthy = isAddressServerHealthy();
        if (dbStatus.contains(HEALTH_UP) && addressServerHealthy && ServerMemberManager.isInIpList()) {
            sb.append(HEALTH_UP);
        } else if (dbStatus.contains(HEALTH_WARN) && addressServerHealthy && ServerMemberManager.isInIpList()) {
            sb.append("WARN:");
            sb.append("slave db (").append(dbStatus.split(":")[1]).append(") down. ");
        } else {
            sb.append("DOWN:");
            if (dbStatus.contains(HEALTH_DOWN)) {
                sb.append("master db (").append(dbStatus.split(":")[1]).append(") down. ");
            }
        
            if (!addressServerHealthy) {
                sb.append("address server down. ");
            }
            if (!ServerMemberManager.isInIpList()) {
                sb.append("server ip ").append(InetUtils.getSelfIP())
                        .append(" is not in the serverList of address server. ");
            }
        }
    
        return sb.toString();
    }

[onewe]

@i will resolve it@