cluster/dm: support deploying Prometheus witch custom command parameters

[WalterWj]

What problem does this PR solve?

Some users want to turn on Prometheus's hot load feature. Or add some Prometheus commands manually

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

[CLAassistant]

All committers have signed the CLA.

[ti-chi-bot[bot]]

Welcome @WalterWj! It looks like this is your first PR to pingcap/tiup 🎉

[WalterWj]

[codecov-commenter]

Codecov Report

All modified and coverable lines are covered by tests :white_check_mark:

Comparison is base (4800a90) 53.39% compared to head (a2ff03c) 55.33%.

:exclamation: Current head a2ff03c differs from pull request most recent head e1d2e70. Consider uploading reports for the commit e1d2e70 to get more accurate results

Additional details and impacted files

```diff @@ Coverage Diff @@ ## master #2340 +/- ## ========================================== + Coverage 53.39% 55.33% +1.94% ========================================== Files 328 328 Lines 34823 34825 +2 ========================================== + Hits 18593 19270 +677 + Misses 13971 13242 -729 - Partials 2259 2313 +54 ``` | [Flag](https://app.codecov.io/gh/pingcap/tiup/pull/2340/flags?src=pr&el=flags&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=pingcap) | Coverage Δ | | |---|---|---| | [cluster](https://app.codecov.io/gh/pingcap/tiup/pull/2340/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=pingcap) | `44.68% <100.00%> (+2.68%)` | :arrow_up: | | [dm](https://app.codecov.io/gh/pingcap/tiup/pull/2340/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=pingcap) | `25.45% <100.00%> (-0.04%)` | :arrow_down: | | [playground](https://app.codecov.io/gh/pingcap/tiup/pull/2340/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=pingcap) | `15.29% <0.00%> (-<0.01%)` | :arrow_down: | | [tiup](https://app.codecov.io/gh/pingcap/tiup/pull/2340/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=pingcap) | `33.56% <ø> (-0.05%)` | :arrow_down: | | [unittest](https://app.codecov.io/gh/pingcap/tiup/pull/2340/flags?src=pr&el=flag&utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=pingcap) | `22.36% <0.00%> (+0.01%)` | :arrow_up: | Flags with carried forward coverage won't be shown. [Click here](https://docs.codecov.io/docs/carryforward-flags?utm_medium=referral&utm_source=github&utm_content=comment&utm_campaign=pr+comments&utm_term=pingcap#carryforward-flags-in-the-pull-request-comment) to find out more.

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[kaaaaaaang]

I think “additional_args” is a more clear name than "more_command"

[WalterWj]

Update run_command to additional_args

[WalterWj]

I think “additional_args” is a more clear name than "more_command"

Done

[kaaaaaaang]

/lgtm

[kaaaaaaang]

/approve

[ti-chi-bot[bot]]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: kaaaaaaang

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[ti-chi-bot[bot]]

@WalterWj: Your PR was out of date, I have automatically updated it for you.

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In response to [this](https://github.com/pingcap/tiup/pull/2340#pullrequestreview-1797617226): >/lgtm Instructions for interacting with me using PR comments are available [here](https://git.k8s.io/community/contributors/guide/pull-requests.md). If you have questions or suggestions related to my behavior, please file an issue against the [kubernetes/test-infra](https://github.com/kubernetes/test-infra/issues/new?title=Prow%20issue:) repository.

[ti-chi-bot[bot]]

[LGTM Timeline notifier]

Timeline:

• 2023-12-26 10:12:39.622997225 +0000 UTC m=+1560650.660224140: :ballot_box_with_check: agreed by srstack.
• 2023-12-27 02:55:58.394762489 +0000 UTC m=+1620849.431989414: :heavy_multiplication_x::repeat: reset by WalterWj.
• 2023-12-27 05:22:24.90362279 +0000 UTC m=+1629635.940849712: :ballot_box_with_check: agreed by kaaaaaaang.
• 2023-12-27 06:45:34.449214075 +0000 UTC m=+1634625.486441002: :heavy_multiplication_x::repeat: reset by ti-chi-bot[bot].
• 2023-12-28 02:33:39.467354155 +0000 UTC m=+1705910.504581067: :ballot_box_with_check: agreed by srstack.