pd-ctl: hidden some hot scheduler config

[lhy1024]

What problem does this PR solve?

Issue Number: ref #5691

What is changed and how does it work?

Check List

Tests

• Unit test
• Manual test (add detailed scripts or steps below)
  

Related changes

• PR to update pingcap/docs/pingcap/docs-cn:

Release note

None.

[ti-chi-bot]

[REVIEW NOTIFICATION]

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• HuSharp
• rleungx

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[codecov]

Codecov Report

Merging #7892 (c551ba7) into master (1cd99f1) will decrease coverage by 3.72%.
Report is 1 commits behind head on master.
The diff coverage is n/a.

❗ Current head c551ba7 differs from pull request most recent head e5264c2. Consider uploading reports for the commit e5264c2 to get more accurate results

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #7892      +/-   ##
==========================================
- Coverage   77.25%   73.53%   -3.72%     
==========================================
  Files         468      436      -32     
  Lines       60937    48374   -12563     
==========================================
- Hits        47078    35573   -11505     
+ Misses      10302     9744     -558     
+ Partials     3557     3057     -500     

Flag	Coverage Δ
unittests	73.53% <ø> (-3.72%)	⬇️

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

[HuSharp]

please fix static :)

[easonn7]

/approve

[lhy1024]

/merge

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[ti-chi-bot]

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

Commit hash: c551ba7