Tiny fix for the problem that the Drainer monitoring configuration of Prometheus is lost due to spelling.

[SE-Bin]

Tiny fix for the problem that the Drainer monitoring configuration of Prometheus is lost due to spelling.

What problem does this PR solve?

Tiny fix for the problem that the Drainer monitoring configuration of Prometheus is lost due to spelling.

What is changed and how it works?

Fix the spelling of "Drainer"

Check List

Tests

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

Release notes:

NONE

[CLAassistant]

All committers have signed the CLA.

[9547]

/lgtm

[lucklove]

/lgtm

It doesn't work if you left a comment /lgtm in Files changed tab, should left the comment in Conversations tab @9547

[lucklove]

/lgtm

[9547]

/lgtm

[lucklove]

/merge

[ti-chi-bot]

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

Details

Commit hash: 67aca2e

[codecov-io]

Codecov Report

Merging #1012 (0fe6e38) into master (aeacaf9) will increase coverage by 0.53%.
The diff coverage is 100.00%.

@@            Coverage Diff             @@
##           master    #1012      +/-   ##
==========================================
+ Coverage   55.16%   55.70%   +0.53%     
==========================================
  Files         279      279              
  Lines       19745    19745              
==========================================
+ Hits        10893    10998     +105     
+ Misses       7151     7038     -113     
- Partials     1701     1709       +8     

Flag	Coverage Δ
cluster	43.64% <100.00%> (+0.67%)	⬆️
dm	23.96% <0.00%> (ø)
integrate	49.97% <100.00%> (+0.53%)	⬆️
playground	20.32% <ø> (ø)
tiup	16.47% <0.00%> (ø)
unittest	23.01% <0.00%> (ø)

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

Impacted Files	Coverage Δ
pkg/cluster/spec/prometheus.go	74.17% <100.00%> (+2.64%)	⬆️
pkg/cluster/operation/scale_in.go	58.27% <0.00%> (+0.66%)	⬆️
pkg/cluster/spec/spec.go	88.57% <0.00%> (+0.71%)	⬆️
pkg/cluster/operation/destroy.go	56.61% <0.00%> (+1.01%)	⬆️
pkg/cluster/template/config/prometheus.go	63.93% <0.00%> (+3.27%)	⬆️
pkg/cluster/api/pdapi.go	61.30% <0.00%> (+4.64%)	⬆️
pkg/cluster/spec/tidb.go	68.04% <0.00%> (+5.15%)	⬆️
pkg/utils/http_client.go	72.97% <0.00%> (+5.40%)	⬆️
pkg/cluster/task/update_meta.go	80.00% <0.00%> (+6.15%)	⬆️
... and 3 more

---

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[ti-chi-bot]

@SE-Bin: Your PR has out-of-dated and I have automatically updated it for you.

Details

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[AstroProfundis]

@SE-Bin please sign the CLA so that we can merge the PR.