ROX-32487 Add RHCOS 10 integration tests for OCP 4.22+

[robbycochran]

Summary

• Updated fetch_ocp_rhcos_bootimage.sh to support an optional rhel-variant argument (e.g., rhel-9, rhel-10). OCP 4.22+ splits RHCOS boot images into coreos-rhel-9.json and coreos-rhel-10.json instead of the single rhcos.json used by earlier releases. The script remains backward compatible for older OCP versions.
• Consolidated RHCOS image list to one image per RHEL minor version, keeping the newest OCP release for each track:

rhcos (x86_64)

RHEL	OCP	VM name prefix
10.2	4.22	ci-rhcos-10-2-20260-
9.6	4.22	ci-rhcos-9-6-202510-
9.4	4.18	ci-rhcos-418-94-202-
9.2	4.14	ci-rhcos-414-92-202-
8.6	4.12	ci-rhcos-412-86-202-

rhcos-arm64

RHEL	OCP	VM name prefix
10.2	4.22	ci-rhcos-10-2-20260-
9.6	4.22	ci-rhcos-9-6-202510-
9.4	4.18	ci-rhcos-418-94-202-

Test plan

• Verified fetch_ocp_rhcos_bootimage.sh resolves all images correctly with both old and new URL formats
• CI integration tests pass on RHCOS VMs (including new RHEL 10 images)

🤖 Generated with Claude Code

[coderabbitai]

🚥 Pre-merge checks | ✅ 3

✅ Passed checks (3 passed)

Check name	Status	Explanation
Docstring Coverage	✅ Passed	No functions found in the changed files to evaluate docstring coverage. Skipping docstring coverage check.
Description check	✅ Passed	The PR description is comprehensive and addresses the template requirements, including a clear summary of changes, a detailed consolidated RHCOS image list, and a test plan with verification steps completed.
Title check	✅ Passed	The title accurately describes the main objective of the PR: adding RHCOS 10 integration tests for OCP 4.22+, which aligns with the changes made to support RHEL 10 images in the configuration and script updates.

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✨ Finishing Touches

📝 Generate docstrings

• Create stacked PR
• Commit on current branch

🧪 Generate unit tests (beta)

• Create PR with unit tests
• Commit unit tests in branch rc-add-rhcos10

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[codecov-commenter]

Codecov Report

✅ All modified and coverable lines are covered by tests.
✅ Project coverage is 27.38%. Comparing base (ec207af) to head (11d303a).
⚠️ Report is 19 commits behind head on master.
✅ All tests successful. No failed tests found.

Additional details and impacted files

@@           Coverage Diff           @@
##           master    #3152   +/-   ##
=======================================
  Coverage   27.38%   27.38%           
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  Files          95       95           
  Lines        5427     5427           
  Branches     2548     2548           
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  Hits         1486     1486           
  Misses       3214     3214           
  Partials      727      727           

Flag	Coverage Δ
collector-unit-tests	27.38% <ø> (ø)

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[coderabbitai]

Actionable comments posted: 1

🤖 Prompt for all review comments with AI agents

Verify each finding against the current code and only fix it if needed.

Inline comments:
In `@ansible/scripts/fetch_ocp_rhcos_bootimage.sh`:
- Around line 17-21: The script constructs URL based on RHEL_VARIANT into the
variable URL but does not validate the HTTP response or JSON before extracting
the image name; update the fetch/parse sequence that consumes URL to (1) use a
strict HTTP fetch (curl/wget with fail and show-error flags) and check the HTTP
status, (2) validate the response is valid JSON (e.g., pipe to jq --exit-status)
and that the expected image field/key exists and is non-empty, and (3) if any
check fails, print a clear error referencing URL and exit non‑zero so the script
fails fast instead of producing an empty image value; locate the fetch/parse
code that reads URL and the variable name holding the image to apply these
checks.

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ℹ️ Review info

⚙️ Run configuration

Configuration used: Organization UI

Review profile: CHILL

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Run ID: 11d7f97a-5e1c-4bc3-a316-40e76358b373

📥 Commits

Reviewing files that changed from the base of the PR and between c8c0181 and 8faad73.

📒 Files selected for processing (2)

• ansible/group_vars/all.yml
• ansible/scripts/fetch_ocp_rhcos_bootimage.sh