Fix: Optimization PodsAreChanged function

[shonge]

What problem does this PR solve?

Close #3895

What is changed and how does it work?

Code changes

• Has Go code change
• Has CI related scripts change

Tests

• Unit test
• E2E test
• Manual test
• No code

Side effects

• Breaking backward compatibility
• Other side effects:

Related changes

• Need to cherry-pick to the release branch
• Need to update the documentation

Release Notes

Please refer to Release Notes Language Style Guide before writing the release note.

Optimization PodsAreChanged function

[shonge]

/run-all-tests

[codecov-io]

Codecov Report

Merging #3901 (8c3768b) into master (697fd25) will increase coverage by 0.01%.
The diff coverage is n/a.

@@            Coverage Diff             @@
##           master    #3901      +/-   ##
==========================================
+ Coverage   62.41%   62.42%   +0.01%     
==========================================
  Files         171      171              
  Lines       18134    18134              
==========================================
+ Hits        11318    11321       +3     
+ Misses       5718     5716       -2     
+ Partials     1098     1097       -1     

Flag	Coverage Δ
unittest	62.42% <ø> (+0.01%)	⬆️

[shonge]

@DanielZhangQD PTAL

[DanielZhangQD]

LGTM

[csuzhangxc]

LGTM

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• DanielZhangQD
• csuzhangxc

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[DanielZhangQD]

/merge

[ti-chi-bot]

This pull request has been accepted and is ready to merge.

Commit hash: 8c3768b

[ti-srebot]

cherry pick to release-1.1 in PR #3911