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overvenus
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### What problem does this PR solve? <!--add issue link with summary if exists-->

Base on https://www.gnu.org/software/libc/manual/html_node/Argument-Syntax.html hyphen delimiter is preferred.

### Check List <!--REMOVE the items that are not applicable-->

Tests <!-- At least one of them must be included. -->

 - Integration test

Related changes

 - Need to cherry-pick to the release branch

### Release note

As the option is not released so

- No release note

<!-- bugfixes or new feature need a release note, must in the form of a list, such as

- owner: add table in batch when start a changefeed to speed up scheduling

or if no need to be included in the release note, just add the following line

- No release note
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cyclic: prefer hyphen delimiter
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overvenus
username_0
/run-integration-tests
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overvenus
username_0
/run-integration-tests
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overvenus
username_0
/run-integration-tests
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overvenus
username_0
/run-integration-tests
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