MGMT-21025: installing Two Node OpenShift with Arbiter (TNA)

[jgyselov]

📝 Summary

Ticket Summary (Title):

add Two Node Openshift with Arbiter (TNA) to AMC

AI lib PR: openshift-assisted/assisted-installer-ui#3170

Ticket Link:
https://issues.redhat.com/browse/MGMT-21025

Type of Change:

• 🐞 Bug Fix
• ✨ Feature
• 🔧 Refactor
• 💸 Tech Debt
• 🧪 Test-related
• 📄 Docs

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✅ Checklist

General

• PR title follows the convention (e.g. ACM-12340 Fix bug with...)
• Code builds and runs locally without errors
• No console logs, commented-out code, or unnecessary files
• All commits are meaningful and well-labeled
• All new display strings are externalized for localization (English only)
• (Nice to have) JSDoc comments added for new functions and interfaces

If Feature

• UI/UX reviewed (if applicable)
• All acceptance criteria met
• Unit test coverage added or updated
• Relevant documentation or comments included

If Bugfix

• Root cause and fix summary are documented in the ticket (for future reference / errata)
• Fix tested thoroughly and resolves the issue
• Test(s) added to prevent regression

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🗒️ Notes for Reviewers

[openshift-ci]

Skipping CI for Draft Pull Request.
If you want CI signal for your change, please convert it to an actual PR.
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[openshift-ci]

[APPROVALNOTIFIER] This PR is NOT APPROVED

This pull-request has been approved by: jgyselov
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[jgyselov]

Included in #5103