feat(kcmas): multiple metric labels

[zzzzhhb]

What type of PR is this?

Enhancements

What this PR does / why we need it:

support multiple combinations of metric labels.

Which issue(s) this PR fixes:

Special notes for your reviewer:

[codecov]

Codecov Report

Attention: 81 lines in your changes are missing coverage. Please review.

Comparison is base (1d2526f) 53.43% compared to head (5a1c77a) 53.47%.
Report is 2 commits behind head on main.

Files	Patch %	Lines
pkg/custom-metric/store/data/internal/internal.go	75.42%	40 Missing and 18 partials ⚠️
...visor/plugin/metric-emitter/syncer/node/advisor.go	0.00%	11 Missing ⚠️
...g/util/service-discovery/service_single_port_sd.go	60.00%	1 Missing and 3 partials ⚠️
pkg/custom-metric/store/data/types/metric.go	83.33%	2 Missing and 1 partial ⚠️
pkg/util/general/common.go	50.00%	2 Missing and 1 partial ⚠️
pkg/custom-metric/provider/provider.go	66.66%	1 Missing ⚠️
pkg/custom-metric/store/local/local_store.go	66.66%	1 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #390      +/-   ##
==========================================
+ Coverage   53.43%   53.47%   +0.03%     
==========================================
  Files         439      439              
  Lines       48419    48638     +219     
==========================================
+ Hits        25874    26007     +133     
- Misses      19608    19687      +79     
- Partials     2937     2944       +7     

Flag	Coverage Δ
unittest	53.47% <75.96%> (+0.03%)	⬆️

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