component/playground: rm the restriction that tikv num must be greater than 0

[lilinghai]

Signed-off-by: lilinghai [email protected]

What problem does this PR solve?

In order to construct a pd with monitor quickly in pd test, we remove the restriction thas tikv num must be greater than 0.

What is changed and how it works?

Check List

Tests

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

Code changes

• Has exported function/method change
• Has exported variable/fields change
• Has interface methods change
• Has persistent data change

Side effects

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

Related changes

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

Release notes:

NONE

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• nexustar

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[CLAassistant]

All committers have signed the CLA.

[nexustar]

please modify the error message together

[codecov-commenter]

Codecov Report

Base: 56.79% // Head: 51.41% // Decreases project coverage by -5.38% ⚠️

Coverage data is based on head (02f2ecd) compared to base (1ca7132).
Patch coverage: 0.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2073      +/-   ##
==========================================
- Coverage   56.79%   51.41%   -5.38%     
==========================================
  Files         313      312       -1     
  Lines       33177    33166      -11     
==========================================
- Hits        18840    17050    -1790     
- Misses      12102    13888    +1786     
+ Partials     2235     2228       -7     

Flag	Coverage Δ
tiup	16.47% <ø> (ø)
unittest	?

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

Impacted Files	Coverage Δ
components/playground/playground.go	50.94% <0.00%> (ø)
components/dm/ansible/worker.go	0.00% <0.00%> (-100.00%)	⬇️
pkg/meta/err.go	0.00% <0.00%> (-76.19%)	⬇️
pkg/cluster/api/error.go	0.00% <0.00%> (-75.00%)	⬇️
pkg/crypto/rand/passwd.go	0.00% <0.00%> (-75.00%)	⬇️
pkg/telemetry/node_info.go	0.00% <0.00%> (-70.73%)	⬇️
pkg/utils/error.go	0.00% <0.00%> (-64.29%)	⬇️
components/dm/ansible/import.go	0.00% <0.00%> (-61.28%)	⬇️
pkg/telemetry/scrub.go	12.31% <0.00%> (-60.00%)	⬇️
pkg/cluster/executor/local.go	0.00% <0.00%> (-59.38%)	⬇️
... and 43 more

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[lilinghai]

please modify the error message together

done

[nexustar]

please sign the CLA

[nexustar]

/merge

[ti-chi-bot]

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

Commit hash: 9cbf943