[ISSUE #12130] add metadata as labels in prometheus http sd

[Kurok1]

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

What is the purpose of the change

add feature for #12130

Brief changelog

XX

Verifying this change

XXXX

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[KomachiSion]

CI can't pass please fix them。

[Kurok1]

I fixed it

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests ✅

Project coverage is 68.74%. Comparing base (bc039bc) to head (6f92dd3).
Report is 18 commits behind head on develop.

Additional details and impacted files

@@              Coverage Diff              @@
##             develop   #12144      +/-   ##
=============================================
- Coverage      68.75%   68.74%   -0.01%     
- Complexity      9128     9140      +12     
=============================================
  Files           1252     1254       +2     
  Lines          40907    40956      +49     
  Branches        4340     4344       +4     
=============================================
+ Hits           28125    28156      +31     
- Misses         10766    10784      +18     
  Partials        2016     2016              

Files	Coverage Δ
...libaba/nacos/prometheus/utils/PrometheusUtils.java	94.73% <100.00%> (+1.40%)	⬆️

... and 11 files with indirect coverage changes

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