format check on client labels

[shiyiyue1102]

Please do not create a Pull Request without creating an issue first.

What is the purpose of the change

XXXXX

Brief changelog

XX

Verifying this change

XXXX

Follow this checklist to help us incorporate your contribution quickly and easily:

• Make sure there is a Github issue filed for the change (usually before you start working on it). Trivial changes like typos do not require a Github issue. Your pull request should address just this issue, without pulling in other changes - one PR resolves one issue.
• Format the pull request title like [ISSUE #123] Fix UnknownException when host config not exist. Each commit in the pull request should have a meaningful subject line and body.
• Write a pull request description that is detailed enough to understand what the pull request does, how, and why.
• Write necessary unit-test to verify your logic correction, more mock a little better when cross module dependency exist. If the new feature or significant change is committed, please remember to add integration-test in test module.
• Run mvn -B clean package apache-rat:check findbugs:findbugs -Dmaven.test.skip=true to make sure basic checks pass. Run mvn clean install -DskipITs to make sure unit-test pass. Run mvn clean test-compile failsafe:integration-test to make sure integration-test pass.

[codecov-commenter]

Codecov Report

Attention: Patch coverage is 65.00000% with 14 lines in your changes are missing coverage. Please review.

Project coverage is 68.40%. Comparing base (6dc0a21) to head (cfbfea5).
Report is 6 commits behind head on develop.

Additional details and impacted files

@@              Coverage Diff              @@
##             develop   #11903      +/-   ##
=============================================
+ Coverage      68.31%   68.40%   +0.09%     
- Complexity      8976     8995      +19     
=============================================
  Files           1239     1239              
  Lines          40560    40599      +39     
  Branches        4311     4321      +10     
=============================================
+ Hits           27709    27773      +64     
+ Misses         10861    10827      -34     
- Partials        1990     1999       +9     

Files	Coverage Δ
...cos/common/labels/impl/DefaultLabelsCollector.java	68.08% <100.00%> (+3.79%)	⬆️
...om/alibaba/nacos/common/utils/ConnLabelsUtils.java	71.42% <92.85%> (+0.97%)	⬆️
...mon/labels/impl/DefaultLabelsCollectorManager.java	71.69% <38.09%> (-22.06%)	⬇️

... and 6 files with indirect coverage changes

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