fix settings and idm admin user id configuration

[wkloucek]

Description

We've fixed the admin user id configuration of the settings and idm extensions.
The have previously only been configurable via the oCIS shared configuration and
therefore have been undocumented for the extensions. This config option is now part
of both extensions' configuration and can now also be used when the extensions are
compiled standalone.

Related Issue

• Config option was missing on the extension config docs

Motivation and Context

How Has This Been Tested?

• locally

Screenshots (if appropriate):

Types of changes

• Bug fix (non-breaking change which fixes an issue)
• New feature (non-breaking change which adds functionality)
• Breaking change (fix or feature that would cause existing functionality to change)
• Technical debt
• Tests only (no source changes)

Checklist:

• Code changes
• Unit tests added
• Acceptance tests added
• Documentation ticket raised:

[sonarqubecloud]

Kudos, SonarCloud Quality Gate passed!   

0 Bugs
0 Vulnerabilities
0 Security Hotspots
0 Code Smells

0.0% Coverage
0.0% Duplication

[mmattel]

I guess that this will change the yaml file output - therefore docs relevant. Just hooking in so we can trigger a docs build.