dm-test: fix unstable case

[D3Hunter]

What problem does this PR solve?

fix unstable case here

What is changed and how it works?

run command with retry

reason see this

Check List

Tests

• No code

Release note

`None`.

[ti-chi-bot]

[REVIEW NOTIFICATION]

This pull request has been approved by:

• Ehco1996
• glorv

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[D3Hunter]

/run-dm-integration-test

[D3Hunter]

@lance6716 PTAL

[D3Hunter]

/run-dm-compatibility-test
/run-integration-test
/run-kafka-integration-test

[lance6716]

I prefer we update the error message as well

https://github.com/pingcap/ticdc/blob/e052c6aa1878130fccc296be861a4e8201cfcaac/dm/pkg/terror/error_list.go#L792

and maybe we can let Relay unit implement a WaitUntil in future PRs (please help file an issue)

https://github.com/pingcap/ticdc/blob/e052c6aa1878130fccc296be861a4e8201cfcaac/dm/dm/worker/subtask.go#L629

[codecov-commenter]

Codecov Report

Merging #3365 (9f93e26) into master (24030f8) will increase coverage by 0.3534%.
The diff coverage is 61.8229%.

@@               Coverage Diff                @@
##             master      #3365        +/-   ##
================================================
+ Coverage   56.5356%   56.8890%   +0.3534%     
================================================
  Files           211        221        +10     
  Lines         22798      23022       +224     
================================================
+ Hits          12889      13097       +208     
- Misses         8598       8605         +7     
- Partials       1311       1320         +9     

[overvenus]

/merge

[ti-chi-bot]

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

Commit hash: 9f93e26

[Ehco1996]

I prefer we update the error message as well

https://github.com/pingcap/ticdc/blob/e052c6aa1878130fccc296be861a4e8201cfcaac/dm/pkg/terror/error_list.go#L792

and maybe we can let Relay unit implement a WaitUntil in future PRs (please help file an issue)

https://github.com/pingcap/ticdc/blob/e052c6aa1878130fccc296be861a4e8201cfcaac/dm/dm/worker/subtask.go#L629

we can disscuss this later, quick merge this pr for CI 😅😅

[Ehco1996]

/merge

[Ehco1996]

/run-dm-integration-tests
/run-unit-test

[ti-chi-bot]

@D3Hunter: Your PR was out of date, I have automatically updated it for you.

At the same time I will also trigger all tests for you:

/run-all-tests

If the CI test fails, you just re-trigger the test that failed and the bot will merge the PR for you after the CI passes.

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