[3.0] Add unit test for dubbo-registry-nacos

[wangchengming666]

Add unit test for dubbo-registry-nacos

[codecov-commenter]

Codecov Report

Merging #9035 (409d857) into 3.0 (dcfd3ed) will increase coverage by 0.52%.
The diff coverage is 30.43%.

@@             Coverage Diff              @@
##                3.0    #9035      +/-   ##
============================================
+ Coverage     63.75%   64.28%   +0.52%     
- Complexity      313      314       +1     
============================================
  Files          1168     1168              
  Lines         50192    50193       +1     
  Branches       7465     7466       +1     
============================================
+ Hits          32001    32267     +266     
+ Misses        14703    14423     -280     
- Partials       3488     3503      +15     

Impacted Files	Coverage Δ
...ubbo/registry/nacos/NacosNamingServiceWrapper.java	52.17% <0.00%> (+52.17%)	⬆️
...org/apache/dubbo/registry/nacos/NacosRegistry.java	51.77% <30.00%> (+51.77%)	⬆️
...o/registry/nacos/util/NacosInstanceManageUtil.java	75.00% <50.00%> (+75.00%)	⬆️
...ng/transport/dispatcher/all/AllChannelHandler.java	89.65% <0.00%> (-6.90%)	⬇️
...ng/exchange/support/header/HeartbeatTimerTask.java	68.42% <0.00%> (-5.27%)	⬇️
.../registry/zookeeper/ZookeeperServiceDiscovery.java	83.33% <0.00%> (-2.39%)	⬇️
.../src/main/java/org/apache/dubbo/rpc/RpcStatus.java	70.23% <0.00%> (-1.20%)	⬇️
...ubbo/config/deploy/DefaultApplicationDeployer.java	79.19% <0.00%> (-0.45%)	⬇️
...n/java/org/apache/dubbo/common/utils/NetUtils.java	69.03% <0.00%> (+0.32%)	⬆️
...ting/zookeeper/curator/CuratorZookeeperClient.java	71.35% <0.00%> (+0.97%)	⬆️
... and 14 more

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