koord-scheduler: coscheduling supports sensing PodGroup changes

[ZiMengSheng]

Ⅰ. Describe what this PR does

PodGroup Spec may changed while scheduler is scheduling gang membe. Scheduler cache should be aware these changes and adjust its scheduling behavior

Ⅱ. Does this pull request fix one issue?

NONE

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

Patch coverage: 56.25% and project coverage change: +0.02 🎉

Comparison is base (52fd1b7) 64.78% compared to head (df97691) 64.80%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1299      +/-   ##
==========================================
+ Coverage   64.78%   64.80%   +0.02%     
==========================================
  Files         317      317              
  Lines       33127    33134       +7     
==========================================
+ Hits        21461    21473      +12     
+ Misses      10107    10096      -11     
- Partials     1559     1565       +6     

Flag	Coverage Δ
unittests	64.80% <56.25%> (+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/gang.go	81.21% <ø> (+0.76%)	⬆️
.../scheduler/plugins/coscheduling/core/gang_cache.go	70.43% <53.33%> (-2.21%)	⬇️
pkg/scheduler/plugins/coscheduling/core/core.go	37.04% <100.00%> (+0.20%)	⬆️

... and 3 files with indirect coverage changes

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[eahydra]

please add more ut.

[eahydra]

/lgtm

[eahydra]

/lgtm

[eahydra]

/approve

[koordinator-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: eahydra

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