DOCS: Add downstream-relevant attributes to facilitate single sourcing

[sheilamjones]

This PR aims to update the upstream _attributes.adoc file with the additional attributes needed to migrate the Red Hat Deploying to OpenShift Container Platform guide to the upstream Quarkus community and to facilitate the single-sourcing of the guide back downstream.

For more information, see QDOCS-1082

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[sheilamjones]

Hi @gsmet, @rolfedh, @iocanel,
To migrate the Deploy to OpenShift guide from downstream to upstream, I need to add additional attributes to the upstream _attributes.adoc file. This will help facilitate the migration of the content from downstream to upstream and to single source this content back downstream for RHBQ 3.20.
Kind regards,
Sheila

[github-actions]

🙈 The PR is closed and the preview is expired.

[rolfedh]

I agree with gsmet's suggestions. Otherwise, everything looks good to me.

[iocanel]

I agree with the changes requested by @gsmet

[sheilamjones]

Thank you @iocanel. I have now implemented these fixes.

[sheilamjones]

Hi @gsmet, @iocanel, @rolfedh,
Fix is implemented per your feedback. If all looks okay now, this PR is ready to merge.
Kind regards,
Sheila

[iocanel]

LGTM

[rolfedh]

LGTM

[sheilamjones]

Hi @gsmet, @iocanel, @rolfedh,
Thanks all for your reviews and approval. This PR is ready to merge.
Kind regards,
Sheila

[iocanel]

@gsmet: it seems that your change requests have been applied, can we merge this?

[gsmet]

Since this patch was written, we moved to Ubi 9 so this needs adjusment (included in future 3.20).

[sheilamjones]

Hi @gsmet, I updated these values to Ubi 9 per your suggestion. Can I clarify though that this will be correct for RHBQ 3.20 (which is based on upstream 3.19)? This PR is aimed to be backported to 3.19.
Regards,
Sheila

[gsmet]

I confirm UBI 9 is the version in 3.20.

[gsmet]

Let's merge this to make progress but... I don't think this will fly but it's just an intuition as I have no idea how you plan to use them.

In the community, people can use any Java 17+ (typically, if they want to use Java 23, that's fine).

So please send me an email when you start using these, with a pointer, so that I can have a look.

[sheilamjones]

Hi @gsmet,

Thanks for your review. These attributes are used mainly in the Prerequisites section of the various procedures (in the other PRs that you are reviewing/merging as part of this effort) for deploying to OpenShift.

For example, in the Prerequisite, "You have OpenJDK {jdk-version-other} or later installed."

Per your request, I will update you via email with more details. Again, many thanks for your reviews and feedback.

[quarkus-bot]

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