fix (test/extended/util) : shell doesn't parse command output ending without newline (#4416)

[rohanKanojia]

Description

Fix #4416

Type of change

• Bug fix (non-breaking change which fixes an issue)
• Feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change
• Chore (non-breaking change which doesn't affect codebase;
  test, version modification, documentation, etc.)

Checklist

• I have read the contributing guidelines
• My code follows the style guidelines of this project
• I Keep It Small and Simple: The smaller the PR is, the easier it is to review and have it merged
• I use conventional commits in my commit messages
• I have performed a self-review of my code
• I have added tests that prove my fix is effective or that my feature works
• New and existing unit tests pass locally with my changes
• I tested my code on specified platforms
  • Linux
  • Windows
  • MacOS

Fixes: Issue #4416
Relates to: Issue #4397

Solution/Idea

ScanPipe should not assume that the entire line contains only the exit code token. It should extract the exit code token and write the remainder of the output to the output buffer.

Proposed changes

Do not assume that the entire output line contains only the exit code token. Extract any prefix and write it to the output buffer.

Testing

The test added in #4414 should pass once these changes get merged.

[openshift-ci]

Hi @rohanKanojia. Thanks for your PR.

I'm waiting for a crc-org member to verify that this patch is reasonable to test. If it is, they should reply with /ok-to-test on its own line. Until that is done, I will not automatically test new commits in this PR, but the usual testing commands by org members will still work. Regular contributors should join the org to skip this step.

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[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[praveenkumar]

/ok-to-test

[openshift-ci]

@rohanKanojia: The following tests failed, say /retest to rerun all failed tests or /retest-required to rerun all mandatory failed tests:

Test name	Commit	Details	Required	Rerun command
ci/prow/integration-crc	fa728a4	link	true	/test integration-crc
ci/prow/e2e-crc	fa728a4	link	true	/test e2e-crc

Full PR test history. Your PR dashboard.

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 kubernetes-sigs/prow repository. I understand the commands that are listed here.