Add Release Notes for Foreman 3.9

[Griffin-Sullivan]

• I am familiar with the contributing guidelines.

Please cherry-pick my commits into:

• Foreman 3.9/Katello 4.11 (planned Satellite 6.15)
• Foreman 3.8/Katello 4.10
• Foreman 3.7/Katello 4.9 (Satellite 6.14)
• Foreman 3.6/Katello 4.8
• Foreman 3.5/Katello 4.7 (Satellite 6.13; orcharhino 6.6)
• Foreman 3.4/Katello 4.6 (EL8 only)
• Foreman 3.3/Katello 4.5 on EL7 & EL8 (Satellite 6.12 on EL8 only; orcharhino 6.4/6.5 on EL8 only)
• Foreman 3.2/Katello 4.4 on EL7 & EL8
• Foreman 3.1/Katello 4.3 on EL7 & EL8 (Satellite 6.11 EL7/8; orcharhino 6.3 on EL7/8)
• We do not accept PRs for Foreman older than 3.1.

[github-actions]

The PR preview for 76435b1 is available at theforeman-foreman-documentation-preview-pr-2629.surge.sh

The following output files are affected by this PR:

• Release_Notes/index-foreman-deb.html
• Release_Notes/index-foreman-el.html
• Release_Notes/index-katello.html
• Release_Notes/index-orcharhino.html
• Release_Notes/index-satellite.html

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[ekohl]

I think this is about the new experimental All Hosts page. AFAIK the existing All Hosts already has these.

cc @jeremylenz

[jeremylenz]

Yes, this is about the new page.

[Griffin-Sullivan]

So should I remove this from the headline features? Or do I need to reword this?

[jeremylenz]

Suggested change

	=== New All Hosts page features
	The All Hosts page has been revamped to include features like Host Create and Register buttons, bulk host deletion, and faster links to each host. Users will now have the ability to do many CRUD tasks from the All Hosts page instead of having to go to other pages.
	=== New All Hosts page features
	The new All Hosts page has been revamped to include features like Host Create and Register buttons, bulk host deletion, and faster links to each host. Users will now have the ability to do many CRUD tasks from the new All Hosts page instead of having to go to other pages.

[ekohl]

Isn't this the first version to even introduce the new hosts page? Shouldn't it explain that it was introduced as a new experimental feature, intended to replace the existing page?

[jeremylenz]

Oh, I thought it originally got into 3.8 for some reason!

Yes, then we should call it out as a new feature. Should call out that

• The new page will show only if you set 'Show new host overview page' in Settings.
• Initially, it will include features like ... < all the text we had here before >
• In future releases, more features will be added to the new page, and the old page will eventually be retired.

[ekohl]

@jeremylenz if you're up for it, you can also submit your own PR with the headline feature description. As one of its primary authors you probably know best.

[Griffin-Sullivan]

Whatever works for me. @jeremylenz let me know what you'd like to do.

adressed