*: move util into pkg/util

[lcwangchao]

What problem does this PR solve?

Issue Number: ref #41241

What is changed and how it works?

Check List

Tests

• Unit test
• Integration test
• Manual test (add detailed scripts or steps below)
• No need to test

  • I checked and no code files have been changed.

Side effects

• Performance regression: Consumes more CPU
• Performance regression: Consumes more Memory
• Breaking backward compatibility

Documentation

• Affects user behaviors
• Contains syntax changes
• Contains variable changes
• Contains experimental features
• Changes MySQL compatibility

Release note

Please refer to Release Notes Language Style Guide to write a quality release note.

None

[ti-chi-bot]

Hi @lcwangchao. Thanks for your PR.

I'm waiting for a pingcap member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[tiprow]

Hi @lcwangchao. Thanks for your PR.

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[hawkingrei]

/ok-to-test

[codecov]

Codecov Report

Merging #47158 (1b5927a) into master (71e5858) will decrease coverage by 0.3466%.
Report is 3 commits behind head on master.
The diff coverage is n/a.

Additional details and impacted files

@@               Coverage Diff                @@
##             master     #47158        +/-   ##
================================================
- Coverage   73.0051%   72.6586%   -0.3466%     
================================================
  Files          1338       1359        +21     
  Lines        399462     405751      +6289     
================================================
+ Hits         291628     294813      +3185     
- Misses        88992      92198      +3206     
+ Partials      18842      18740       -102     

Flag	Coverage Δ
integration	30.7471% <ø> (?)
unit	72.9971% <ø> (-0.0081%)	⬇️

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

Components	Coverage Δ
dumpling	53.9913% <ø> (ø)
parser	84.9620% <ø> (ø)
br	48.7348% <ø> (-4.3660%)	⬇️

[lcwangchao]

/retest

[ti-chi-bot]

[LGTM Timeline notifier]

Timeline:

• 2023-09-21 08:30:51.997194172 +0000 UTC m=+765417.964782223: ☑️ agreed by hawkingrei.

[easonn7]

/approve

There is no sysvar change.

[ti-chi-bot]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: easonn7, hawkingrei
Once this PR has been reviewed and has the lgtm label, please assign bb7133, zanmato1984 for approval. For more information see the Kubernetes Code Review Process.

The full list of commands accepted by this bot can be found here.

Needs approval from an approver in each of these files:

• OWNERS [hawkingrei]
• autoid_service/OWNERS
• config/OWNERS [easonn7]
• distsql/OWNERS
• executor/OWNERS
• expression/OWNERS
• session/OWNERS [easonn7]
• sessionctx/variable/OWNERS [easonn7]

Approvers can indicate their approval by writing /approve in a comment
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[lcwangchao]

close for #47123 will include this change