Fix the GSS-Proxy AD integration procedure

[adamlazik1]

• [x] I am familiar with the contributing guidelines.

Please cherry-pick my commits into:

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

[github-actions[bot]]

The PR preview for d4f03b3469bd1b818a487b44ed412f0e037ae895 is available at theforeman-foreman-documentation-preview-pr-2737.surge.sh

The following output files are affected by this PR:

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

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show diff as HTML

[adamlazik1]

According to @ alsouza, setting the SPN might not be necessary at all. To be confirmed by retesting next week.

[adamruzicka]

To be confirmed by retesting next week.

Did this happen?

[adamlazik1]

Not yet, but hopefully on the way. I'll ask if there has been any progress.

[ekohl]

Typo in the commit message: GGS -> GSS

[aneta-petrova]

@adamlazik1 and I agreed that I would take over his effort to update and verify the procedure. I filed https://github.com/theforeman/foreman-documentation/pull/3056 for that purpose.