docker-network_mode为host,sentinel无法发现

## Issue Description

docker-network_mode为host,sentinel无法发现
把改成brigde就可以.

## sentinel控制台启动

java -jar /home/dpan/sentinel/sentinel-dashboard-1.7.0.jar --server.port=8021

## 客户端都设置的独立的端口
sentinel:
transport:
dashboard: ${SENTINEL_DASHBOARD_HOST:192.168.10.107}:${SENTINEL_DASHBOARD_PORT:8021}
port: ${RENZHENG_SENTINEL_PORT:8730}

## 与 spring.cloud.inetutils.defaultIpAddress 有关系吗？
配置显示的是127.0.0.1

Start by reproducing the issue with Docker network_mode set to host, using the Sentinel dashboard command and the client transport configuration shown in the report. Inspect the address exposed through spring.cloud.inetutils.defaultIpAddress and compare discovery behavior with bridge networking. Done means Sentinel clients can be discovered while using host networking, or the supported limitation is documented.

Written by the indexing model from the issue text.