MCO-2171: Migrate boot image tests to MCO's disruptive suites

[djoshy]

- What I did
This PR migrates the AWS, GCP and vsphere bootimage test from origin, reusing existing helpers wherever possible. It refactors a few of the helpers so they are accessible via the exutil package.

- How to verify it
The migrated tests added to the disruptive suite should pass; this should not affect functionality so does not need additional QE.

[openshift-ci-robot]

@djoshy: This pull request references MCO-2171 which is a valid jira issue.

Warning: The referenced jira issue has an invalid target version for the target branch this PR targets: expected the story to target the "4.22.0" version, but no target version was set.

Details

In response to this:

- What I did
This PR migrates the AWS, GCP and vsphere bootimage test from origin, reusing existing helpers wherever possible. It refactors a few of the helpers so they are accessible via the exutil package.

- How to verify it
The migrated tests added to the disruptive suite should pass; this should not affect functionality so does not need additional QE.

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 openshift-eng/jira-lifecycle-plugin repository.

[openshift-ci]

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[openshift-ci]

[APPROVALNOTIFIER] This PR is APPROVED

This pull-request has been approved by: djoshy

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