Fix the issue that can't gernerate prometheus config

[lucklove]

What problem does this PR solve?

Fix #1184, Fix #1186

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:

• AstroProfundis

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 writing /lgtm in a comment.
Reviewer can cancel approval by writing /lgtm cancel in a comment.

[AstroProfundis]

/merge

[ti-chi-bot]

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

Commit hash: f0fe317

[ti-chi-bot]

Merge canceled because a new commit is pushed.

[codecov-io]

Codecov Report

Merging #1185 (9a01e4a) into release-1.3 (99b4a13) will increase coverage by 28.55%.
The diff coverage is 50.00%.

@@               Coverage Diff                @@
##           release-1.3    #1185       +/-   ##
================================================
+ Coverage        16.72%   45.28%   +28.55%     
================================================
  Files              144      265      +121     
  Lines            11082    19090     +8008     
================================================
+ Hits              1854     8644     +6790     
- Misses            8746     9129      +383     
- Partials           482     1317      +835     

Flag	Coverage Δ
cluster	37.99% <50.00%> (?)
dm	24.33% <50.00%> (?)
integrate	40.91% <50.00%> (+24.18%)	⬆️
tiup	?
unittest	22.35% <50.00%> (?)

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

Impacted Files	Coverage Δ
cmd/mirror.go	28.53% <ø> (-17.97%)	⬇️
pkg/environment/env.go	12.67% <ø> (-23.14%)	⬇️
pkg/repository/clone_mirror.go	0.00% <0.00%> (ø)
pkg/cluster/embed/autogen_pkger.go	100.00% <100.00%> (ø)
main.go	0.00% <0.00%> (-100.00%)	⬇️
pkg/repository/utils/hash.go	0.00% <0.00%> (-81.82%)	⬇️
pkg/repository/model/publish.go	0.00% <0.00%> (-71.43%)	⬇️
cmd/env.go	23.07% <0.00%> (-69.24%)	⬇️
pkg/utils/args.go	0.00% <0.00%> (-50.00%)	⬇️
pkg/repository/model/model.go	0.00% <0.00%> (-46.62%)	⬇️
... and 244 more

---

Continue to review full report at Codecov.

Legend - Click here to learn more
Δ = absolute <relative> (impact), ø = not affected, ? = missing data
Powered by Codecov. Last update 99b4a13...9a01e4a. Read the comment docs.