cluster: check, deploy support use ssh-agent instead of identity-file

[9547]

What problem does this PR solve?

implement #1393

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

[9547]

/run-all-tests

[codecov-commenter]

Codecov Report

Merging #1416 (547f5b9) into master (befddd5) will decrease coverage by 1.27%.
The diff coverage is 19.44%.

@@            Coverage Diff             @@
##           master    #1416      +/-   ##
==========================================
- Coverage   25.32%   24.04%   -1.28%     
==========================================
  Files         266      226      -40     
  Lines       20625    18434    -2191     
==========================================
- Hits         5223     4433     -790     
+ Misses      14599    13169    -1430     
- Partials      803      832      +29     

Flag	Coverage Δ
dm	24.04% <19.44%> (?)
integrate	24.04% <19.44%> (+8.56%)	⬆️
tiup	?
unittest	?

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

Impacted Files	Coverage Δ
components/dm/command/deploy.go	64.70% <ø> (+25.81%)	⬆️
components/dm/command/scale_out.go	87.50% <ø> (+37.50%)	⬆️
pkg/cluster/manager/check.go	0.00% <ø> (ø)
pkg/cliutil/ssh.go	15.55% <19.44%> (+15.55%)	⬆️
pkg/utils/regexp.go	0.00% <0.00%> (-100.00%)	⬇️
pkg/repository/store/store.go	0.00% <0.00%> (-100.00%)	⬇️
components/dm/ansible/worker.go	0.00% <0.00%> (-100.00%)	⬇️
pkg/repository/utils/hash.go	0.00% <0.00%> (-81.82%)	⬇️
pkg/utils/semver.go	3.47% <0.00%> (-81.74%)	⬇️
pkg/meta/err.go	0.00% <0.00%> (-81.25%)	⬇️
... and 226 more

---

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[9547]

@AstroProfundis PTAL

[AstroProfundis]

Where is sshAuthSock used in this case?

[9547]

SSH_AUTH_SOCK will be used in https://github.com/appleboy/easyssh-proxy/blob/master/easyssh.go#L147-L149, our previous code just checks this socket file exists and valid.

[ti-chi-bot]

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[AstroProfundis]

/merge

[ti-chi-bot]

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

Commit hash: 547f5b9