webhook: revise the validation of Pod resources

[eahydra]

Ⅰ. Describe what this PR does

Remove unused validation about Pod resources, add validation that required the cpu of LSR/LSE Pod must be specified and must be integer.

Ⅱ. Does this pull request fix one issue?

fix #1692

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

All modified lines are covered by tests ✅

Comparison is base (125e52a) 65.99% compared to head (79c1f2b) 65.94%.

Additional details and impacted files

@@            Coverage Diff             @@
##             main    #1693      +/-   ##
==========================================
- Coverage   65.99%   65.94%   -0.06%     
==========================================
  Files         385      384       -1     
  Lines       41595    41474     -121     
==========================================
- Hits        27451    27349     -102     
+ Misses      12122    12099      -23     
- Partials     2022     2026       +4     

Flag	Coverage Δ
unittests	65.94% <100.00%> (-0.06%)	⬇️

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

Files	Coverage Δ
...bhook/pod/validating/cluster_colocation_profile.go	89.02% <100.00%> (-1.98%)	⬇️

... and 3 files with indirect coverage changes

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[eahydra]

/hold

[eahydra]

/hold cancel

[hormes]

/lgtm
/approve

[koordinator-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hormes

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• pkg/webhook/OWNERS [hormes]

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