[Bug][github-actions] icw-parallel-test add MAX_CONNECTIONS

[smartyhero]

fix #ISSUE_Number

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Change logs

icw-parallel-test test adds MAX_CONNECTIONS option. Solve the problem of test case failure

Why are the changes needed?

The test case will fail

Does this PR introduce any user-facing change?

None

How was this patch tested?

Please detail how the changes were tested, including manual tests and any relevant unit or integration tests.

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[my-ship-it]

@smartyhero Please don't use Merge branch