koord-scheduler: support System QOS reserved cpus

[eahydra]

Ⅰ. Describe what this PR does

Users can set annotation node.koordinator.sh/system-qos-resource in node to reserve some cpu cores for Pods configured with System QoS. koord-scheduler should exclude these reserved CPUs for LSE/LSR Pods when allocating CPU cores.

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: 43.75% and project coverage change: -0.03 ⚠️

Comparison is base (0af2a00) 66.13% compared to head (db028ab) 66.11%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1225      +/-   ##
==========================================
- Coverage   66.13%   66.11%   -0.03%     
==========================================
  Files         304      304              
  Lines       31573    31585      +12     
==========================================
+ Hits        20882    20883       +1     
- Misses       9167     9173       +6     
- Partials     1524     1529       +5     

Flag	Coverage Δ
unittests	66.11% <43.75%> (-0.03%)	⬇️

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

Impacted Files	Coverage Δ
.../plugins/nodenumaresource/topology_eventhandler.go	53.84% <43.75%> (-3.30%)	⬇️

... and 1 file with indirect coverage changes

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[zwzhang0107]

/lgtm

[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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[saintube]

/area koord-scheduler