apis: adjust unsuitable constant definitions

[eahydra]

Ⅰ. Describe what this PR does

Definitions related to k8s native Eviction should not be placed in the apis/extensions package

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

[jasonliu747]

/lgtm

[codecov]

Codecov Report

Patch and project coverage have no change.

Comparison is base (a18df74) 66.73% compared to head (0e1a621) 66.73%.

Additional details and impacted files

@@           Coverage Diff           @@
##             main    #1164   +/-   ##
=======================================
  Coverage   66.73%   66.73%           
=======================================
  Files         273      273           
  Lines       29879    29879           
=======================================
  Hits        19939    19939           
  Misses       8516     8516           
  Partials     1424     1424           

Flag	Coverage Δ
unittests	66.73% <0.00%> (ø)

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

Impacted Files	Coverage Δ
pkg/util/pod_evict.go	0.00% <0.00%> (ø)

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[koordinator-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: FillZpp, jasonliu747

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Needs approval from an approver in each of these files:

• apis/OWNERS [FillZpp]
• pkg/koordlet/OWNERS [jasonliu747]
• pkg/util/OWNERS [FillZpp]

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