cluster: allow type change when editing topology

[AstroProfundis]

What problem does this PR solve?

Allowing value type change for edit-config. Especially useful when editing configs.

What is changed and how it works?

The latest version of r3labs/diff has an option to ignore type mismatch error, so we upgrade the dependency and enable that option.

Check List

Tests

• Unit test
• Manual test (add detailed scripts or steps below)
  (Change tikv_servers.(server).config.key: 10 to tikv_servers.(server).config.key: "10MB")
  Before:
  

After:
Save as normal.

Release notes:

cluster: allow value type change in `edit-config`

[codecov-io]

Codecov Report

Merging #1050 (a7e11ec) into master (a246cfa) will increase coverage by 0.09%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #1050      +/-   ##
==========================================
+ Coverage   55.86%   55.95%   +0.09%     
==========================================
  Files         282      282              
  Lines       19868    19869       +1     
==========================================
+ Hits        11099    11118      +19     
+ Misses       7040     7029      -11     
+ Partials     1729     1722       -7     

Flag	Coverage Δ
cluster	44.03% <100.00%> (+0.10%)	⬆️
dm	24.01% <100.00%> (+0.06%)	⬆️
integrate	50.25% <100.00%> (+0.09%)	⬆️
playground	20.30% <0.00%> (-0.01%)	⬇️
tiup	16.47% <0.00%> (-0.01%)	⬇️
unittest	22.28% <100.00%> (+<0.01%)	⬆️

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

Impacted Files	Coverage Δ
pkg/utils/diff.go	87.50% <100.00%> (+0.15%)	⬆️
pkg/cluster/spec/pd.go	68.78% <0.00%> (+1.27%)	⬆️
pkg/cluster/manager/display.go	84.25% <0.00%> (+1.57%)	⬆️
pkg/cluster/api/dmapi.go	60.00% <0.00%> (+1.73%)	⬆️
pkg/cluster/api/pdapi.go	60.56% <0.00%> (+1.89%)	⬆️
pkg/cluster/template/scripts/pd.go	71.87% <0.00%> (+3.12%)	⬆️
pkg/cluster/spec/util.go	86.04% <0.00%> (+4.65%)	⬆️
pkg/utils/http_client.go	72.97% <0.00%> (+5.40%)	⬆️

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[lucklove]

/lgtm

[lucklove]

/merge

[ti-chi-bot]

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

Commit hash: dec4375

[ti-chi-bot]

@AstroProfundis: Your PR has out-of-dated, I have automatically updated it for you.

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