koord-descheduler: balance prod pods between nodes in LowNodeLoad

[zwForrest]

Ⅰ. Describe what this PR does

Balance the usage of prod pods among nodes. Ensure that both the resource usage of prod pods on nodes and the overall node usage are balanced. This helps reduce the impact of node usage on prod applications.

Ⅱ. Does this pull request fix one issue?

fix #2043

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

Attention: Patch coverage is 88.85017% with 32 lines in your changes missing coverage. Please review.

Project coverage is 68.67%. Comparing base (afa430a) to head (63f879b).
Report is 34 commits behind head on main.

Files	Patch %	Lines
...er/framework/plugins/loadaware/utilization_util.go	93.08%	7 Missing and 6 partials ⚠️
...ler/apis/config/validation/validation_loadaware.go	0.00%	8 Missing and 2 partials ⚠️
...duler/framework/plugins/loadaware/low_node_load.go	91.95%	2 Missing and 5 partials ⚠️
...heduler/apis/config/v1alpha2/conversion_plugins.go	0.00%	2 Missing ⚠️

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #2066      +/-   ##
==========================================
- Coverage   68.75%   68.67%   -0.09%     
==========================================
  Files         423      430       +7     
  Lines       39246    40065     +819     
==========================================
+ Hits        26985    27516     +531     
- Misses       9928    10182     +254     
- Partials     2333     2367      +34     

Flag	Coverage Δ
unittests	68.67% <88.85%> (-0.09%)	⬇️

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[songtao98]

There are several tiny coding style suggestions in your PR. However, we need to discuss about the available resources calculation logic again.

[songtao98]

@zwForrest
The PR's title would be better using koord-descheduler: balance prod pods between nodes in LowNodeLoad.

[songtao98]

/lgtm

[songtao98]

/lgtm

[koordinator-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hormes

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• pkg/client/OWNERS [hormes]
• pkg/descheduler/OWNERS [hormes]

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