Sche redirect2

[lhy1024]

What problem does this PR solve?

Issue Number: Close #xxx

What is changed and how does it work?

Check List

Tests

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

Code changes

• Has the configuration change
• Has HTTP API interfaces changed (Don't forget to add the declarative for the new API)
• Has persistent data change

Side effects

• Possible performance regression
• Increased code complexity
• Breaking backward compatibility

Related changes

• PR to update pingcap/docs/pingcap/docs-cn:
• PR to update pingcap/tiup:
• Need to cherry-pick to the release branch

Release note

None.

[codecov-commenter]

Codecov Report

Merging #11 (0f733dc) into master (58113f8) will increase coverage by 0.09%.
The diff coverage is 100.00%.

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@@            Coverage Diff             @@
##           master      #11      +/-   ##
==========================================
+ Coverage   74.45%   74.54%   +0.09%     
==========================================
  Files         436      436              
  Lines       46479    46505      +26     
==========================================
+ Hits        34604    34668      +64     
+ Misses       8841     8805      -36     
+ Partials     3034     3032       -2     

Flag	Coverage Δ
unittests	74.54% <100.00%> (+0.09%)	⬆️

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