support config scrape_interval and scrape_timeout for prometheus

[nexustar]

What problem does this PR solve?

• close Support scrape timeout config in prometheus #2049

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:

• srstack

To complete the pull request process, please ask the reviewers in the list to review by filling /cc @reviewer in the comment.
After your PR has acquired the required number of LGTMs, you can assign this pull request to the committer in the list by filling /assign @committer in the comment to help you merge this pull request.

The full list of commands accepted by this bot can be found here.

Reviewer can indicate their review by submitting an approval review.
Reviewer can cancel approval by submitting a request changes review.

[codecov-commenter]

Codecov Report

Base: 57.14% // Head: 57.01% // Decreases project coverage by -0.13% ⚠️

Coverage data is based on head (894bd28) compared to base (799b089).
Patch coverage: 100.00% of modified lines in pull request are covered.

Additional details and impacted files

@@            Coverage Diff             @@
##           master    #2071      +/-   ##
==========================================
- Coverage   57.14%   57.01%   -0.13%     
==========================================
  Files         313      313              
  Lines       33513    33515       +2     
==========================================
- Hits        19149    19108      -41     
- Misses      12116    12159      +43     
  Partials     2248     2248              

Flag	Coverage Δ
cluster	45.77% <100.00%> (-0.15%)	⬇️
dm	26.20% <100.00%> (+0.01%)	⬆️
playground	14.93% <0.00%> (-0.02%)	⬇️
tiup	16.15% <0.00%> (-<0.01%)	⬇️
unittest	22.59% <0.00%> (-0.01%)	⬇️

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

Impacted Files	Coverage Δ
pkg/cluster/template/config/prometheus.go	81.44% <ø> (ø)
pkg/cluster/spec/monitoring.go	76.13% <100.00%> (+0.15%)	⬆️
pkg/cluster/api/cdcapi.go	44.19% <0.00%> (-12.56%)	⬇️
pkg/cluster/operation/scale_in.go	52.98% <0.00%> (-1.88%)	⬇️
pkg/cluster/api/pdapi.go	52.04% <0.00%> (-1.41%)	⬇️
pkg/cluster/spec/cdc.go	56.32% <0.00%> (-0.57%)	⬇️
components/playground/playground.go	50.61% <0.00%> (-0.33%)	⬇️
pkg/cluster/spec/tiflash.go	70.46% <0.00%> (+0.50%)	⬆️

Help us with your feedback. Take ten seconds to tell us how you rate us. Have a feature suggestion? Share it here.

☔ View full report at Codecov.
📢 Do you have feedback about the report comment? Let us know in this issue.

[nexustar]

/merge

[ti-chi-bot]

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

Commit hash: 894bd28