Update check for default principal and agent image

[varshab1210]

What type of PR is this?

kind failing-test

What does this PR do / why we need it:

Update default image check for test runs against RCs

Have you updated the necessary documentation?

• Documentation update is required by this PR.
• Documentation has been updated.

Which issue(s) this PR fixes:

Fixes #?

Test acceptance criteria:

• Unit Test
• E2E Test

How to test changes / Special notes to the reviewer:

[openshift-ci]

Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
You can still manually trigger a test run with /test all

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[varshab1210]

/test v4.21-images

[openshift-ci]

@varshab1210: The following test 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/v4.21-images	5dee833	link	true	/test v4.21-images

Full PR test history. Your PR dashboard.

Details

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