koord-descheduler: fix failed evict with StatefulSet Pod

[eahydra]

Signed-off-by: Joseph joseph.t.lee@outlook.com

Ⅰ. Describe what this PR does

1. When evict StatefulSet pod via PodMigrationJob, koord-descheduler cannot confirm whether the Pod has been migrated successfully since the newly created Pod has the same name. So koord-descheduler should check if the evicting Pod's UID is different from the previous Pod.
2. Also in the scene, the logic of check whether the Reservation reserved on same on with Pod is also invalid.

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 #559 (ff0c370) into main (f42c6ea) will decrease coverage by 0.09%.
The diff coverage is 49.31%.

@@            Coverage Diff             @@
##             main     #559      +/-   ##
==========================================
- Coverage   67.43%   67.34%   -0.10%     
==========================================
  Files         164      164              
  Lines       17432    17485      +53     
==========================================
+ Hits        11756    11776      +20     
- Misses       4814     4840      +26     
- Partials      862      869       +7     

Flag	Coverage Δ
unittests	67.34% <49.31%> (-0.10%)	⬇️

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

Impacted Files	Coverage Δ
pkg/descheduler/controllers/migration/filter.go	7.69% <40.00%> (ø)
...kg/descheduler/controllers/migration/controller.go	62.11% <50.00%> (-1.50%)	⬇️
pkg/util/httputil/reverseproxy.go	84.30% <0.00%> (-0.80%)	⬇️

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[jasonliu747]

/assign
I'll take a look later today~

[hormes]

/lgtm
/approve

[koordinator-bot]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: hormes

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