koord-scheduler: coscheduling supports reservation

[eahydra]

Ⅰ. Describe what this PR does

The plugin coscheduing of koord-scheduler also supports Reservation using Coscheduling API.

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

Patch coverage: 100.00% and no project coverage change.

Comparison is base (89be790) 64.34% compared to head (34f60b6) 64.35%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1335   +/-   ##
=======================================
  Coverage   64.34%   64.35%           
=======================================
  Files         324      324           
  Lines       33682    33688    +6     
=======================================
+ Hits        21673    21679    +6     
- Misses      10425    10427    +2     
+ Partials     1584     1582    -2     

Flag	Coverage Δ
unittests	64.35% <100.00%> (+<0.01%)	⬆️

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	37.66% <100.00%> (+0.61%)	⬆️
pkg/scheduler/plugins/coscheduling/coscheduling.go	70.90% <100.00%> (+0.81%)	⬆️

... and 3 files with indirect coverage changes

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[ZiMengSheng]

/lgtm

[hormes]

/approve

[koordinator-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hormes

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• pkg/scheduler/OWNERS [hormes]

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