enhancement(kcmas): bucket object store

[zzzzhhb]

What type of PR is this?

Enhancements

What this PR does / why we need it:

support bucket object store in kcmas

Which issue(s) this PR fixes:

Special notes for your reviewer:

[codecov]

Codecov Report

Attention: 55 lines in your changes are missing coverage. Please review.

Comparison is base (d6330f2) 53.46% compared to head (1ce2257) 53.55%.
Report is 2 commits behind head on main.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #353      +/-   ##
==========================================
+ Coverage   53.46%   53.55%   +0.09%     
==========================================
  Files         436      437       +1     
  Lines       48034    48135     +101     
==========================================
+ Hits        25679    25778      +99     
+ Misses      19469    19452      -17     
- Partials     2886     2905      +19     

Flag	Coverage Δ
unittest	53.55% <72.36%> (+0.09%)	⬆️

Flags with carried forward coverage won't be shown. Click here to find out more.

Files	Coverage Δ
pkg/custom-metric/store/local/local_store.go	64.28% <50.00%> (-1.91%)	⬇️
pkg/custom-metric/store/data/object_store.go	84.84% <84.84%> (ø)
pkg/custom-metric/store/data/cache.go	83.33% <63.15%> (-12.97%)	⬇️

... and 18 files with indirect coverage changes

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