OCPBUGS-44889: machine-os-images: Control download host from config

[joepvd]

No description provided.

[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

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[openshift-bot]

Validating 1 file(s)...
Validating images/ose-machine-os-images.yml...
Traceback (most recent call last):
File "/usr/local/bin/validate-ocp-build-data", line 33, in
sys.exit(load_entry_point('rh-ocp-build-data-validator==0.2.5', 'console_scripts', 'validate-ocp-build-data')())
File "/usr/local/lib/python3.9/site-packages/validator/main.py", line 87, in main
validate(f, args.exclude_vpn, args.schema_only)
File "/usr/local/lib/python3.9/site-packages/validator/main.py", line 23, in validate
support.fail_validation(msg, parsed)
File "/usr/local/lib/python3.9/site-packages/validator/support.py", line 14, in fail_validation
raise exceptions.ValidationFailed(msg)
validator.exceptions.ValidationFailed: Schema mismatch: images/ose-machine-os-images.yml
Returned error: Additional properties are not allowed ('delivery' was unexpected)

[openshift-ci-robot]

@joepvd: This pull request references Jira Issue OCPBUGS-44889, which is invalid:

• release note text must be set and not match the template OR release note type must be set to "Release Note Not Required". For more information you can reference the OpenShift Bug Process.
• expected Jira Issue OCPBUGS-44889 to depend on a bug targeting a version in 4.20.0 and in one of the following states: MODIFIED, ON_QA, VERIFIED, but no dependents were found

Comment /jira refresh to re-evaluate validity if changes to the Jira bug are made, or edit the title of this pull request to link to a different bug.

The bug has been updated to refer to the pull request using the external bug tracker.

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