koord-scheduler: add GetQuotaSummaries/GetGangSummaries debug API

[buptcozy]

Signed-off-by: yangzhang bupt_cozy@126.com

Ⅰ. Describe what this PR does

Ⅱ. Does this pull request fix one issue?

Ⅲ. Describe how to verify it

Ⅳ. Special notes for reviews

V. Checklist

• I have written necessary docs and comments
• I have added necessary unit tests and integration tests
• All checks passed in make test

[codecov]

Codecov Report

Base: 68.85% // Head: 68.87% // Increases project coverage by +0.02% 🎉

Coverage data is based on head (c26536d) compared to base (2537ed9).
Patch coverage: 25.64% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##             main     #686      +/-   ##
==========================================
+ Coverage   68.85%   68.87%   +0.02%     
==========================================
  Files         204      204              
  Lines       22983    23114     +131     
==========================================
+ Hits        15824    15919      +95     
- Misses       6058     6092      +34     
- Partials     1101     1103       +2     

Flag	Coverage Δ
unittests	68.87% <25.64%> (+0.02%)	⬆️

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

Impacted Files	Coverage Δ
pkg/scheduler/plugins/coscheduling/core/core.go	39.31% <0.00%> (-0.98%)	⬇️
.../scheduler/plugins/coscheduling/core/gang_cache.go	74.69% <0.00%> (-4.29%)	⬇️
...r/plugins/elasticquota/core/group_quota_manager.go	81.96% <0.00%> (-2.38%)	⬇️
...g/scheduler/plugins/coscheduling/plugin_service.go	73.33% <100.00%> (+9.69%)	⬆️
...g/scheduler/plugins/elasticquota/plugin_service.go	69.23% <100.00%> (+13.67%)	⬆️
...kg/scheduler/plugins/elasticquota/quota_handler.go	68.88% <100.00%> (+1.44%)	⬆️
pkg/util/system/system_file.go	85.00% <0.00%> (-15.00%)	⬇️
pkg/util/httputil/reverseproxy.go	84.30% <0.00%> (-0.54%)	⬇️
...et/runtimehooks/hooks/groupidentity/interceptor.go	100.00% <0.00%> (ø)
.../koordlet/runtimehooks/hooks/groupidentity/rule.go	85.47% <0.00%> (+1.50%)	⬆️
... and 1 more

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[eahydra]

/lgtm

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