refactor: move GeneratePodPatch under util package

[jasonliu747]

Signed-off-by: Jason Liu jasonliu747@gmail.com

Ⅰ. Describe what this PR does

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

Merging #504 (ef77e53) into main (8e49802) will increase coverage by 0.01%.
The diff coverage is 84.61%.

@@            Coverage Diff             @@
##             main     #504      +/-   ##
==========================================
+ Coverage   68.03%   68.04%   +0.01%     
==========================================
  Files         152      153       +1     
  Lines       16435    16425      -10     
==========================================
- Hits        11181    11177       -4     
+ Misses       4419     4415       -4     
+ Partials      835      833       -2     

Flag	Coverage Δ
unittests	68.04% <84.61%> (+0.01%)	⬆️

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

Impacted Files	Coverage Δ
...cheduler/plugins/nodenumaresource/plugin_helper.go	88.88% <ø> (+10.62%)	⬆️
pkg/scheduler/plugins/reservation/utils.go	77.14% <ø> (+1.03%)	⬆️
pkg/util/utils.go	78.26% <ø> (-11.08%)	⬇️
pkg/util/pod.go	58.97% <40.00%> (-1.30%)	⬇️
pkg/scheduler/plugins/reservation/plugin.go	76.90% <50.00%> (ø)
pkg/util/cpuset.go	94.23% <94.23%> (ø)
pkg/scheduler/plugins/nodenumaresource/plugin.go	70.11% <100.00%> (ø)

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