*: fix slow ssh connect when using buildin ssh

[nexustar]

What problem does this PR solve?

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

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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.

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[codecov-commenter]

Codecov Report

Merging #1664 (c9ed7d8) into master (23c7bef) will increase coverage by 34.92%.
The diff coverage is n/a.

@@             Coverage Diff             @@
##           master    #1664       +/-   ##
===========================================
+ Coverage   15.68%   50.60%   +34.92%     
===========================================
  Files         152      296      +144     
  Lines       15347    27309    +11962     
===========================================
+ Hits         2407    13821    +11414     
+ Misses      12423    11414     -1009     
- Partials      517     2074     +1557     

Flag	Coverage Δ
cluster	43.98% <ø> (?)
dm	26.08% <ø> (?)
integrate	50.60% <ø> (+34.92%)	⬆️
playground	13.55% <ø> (?)
tiup	15.68% <ø> (ø)
unittest	∅ <ø> (∅)

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

Impacted Files	Coverage Δ
pkg/cluster/operation/download.go	40.00% <0.00%> (ø)
components/dm/spec/bindversion.go	100.00% <0.00%> (ø)
components/cluster/command/exec.go	88.88% <0.00%> (ø)
pkg/cluster/task/update_meta.go	85.00% <0.00%> (ø)
pkg/cluster/task/step.go	67.88% <0.00%> (ø)
components/playground/instance/ticdc.go	0.00% <0.00%> (ø)
pkg/cluster/operation/operation.go	78.57% <0.00%> (ø)
pkg/cluster/manager/cacert.go	55.10% <0.00%> (ø)
components/dm/command/deploy.go	68.42% <0.00%> (ø)
pkg/cluster/manager/patch.go	48.80% <0.00%> (ø)
... and 237 more

---

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[srstack]

/LGTM

[ti-chi-bot]

@srstack: Thanks for your review. The bot only counts approvals from reviewers and higher roles in list, but you're still welcome to leave your comments.

In response to this:

/LGTM

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[nexustar]

/merge

[ti-chi-bot]

@nexustar: /merge in this pull request requires 1 approval(s).

In response to this:

/merge

Instructions for interacting with me using PR comments are available here. If you have questions or suggestions related to my behavior, please file an issue against the ti-community-infra/tichi repository.

[AstroProfundis]

/merge

[ti-chi-bot]

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

Commit hash: c9ed7d8