Added FakeSetting for keys generation for support package

[Combs7th]

@claude - Let's update the Mattermost Product Documentation to note Support Packet sanitization coverage improvements from Mattermost v11.6.0 onward captured via mattermost/mattermost#35346.

Scope & constraints:

• Review PR #35346 first and use only PR-verifiable evidence.
• Do NOT modify changelogs, upgrade notes, version archive, deprecated/removed features, or unsupported releases.
• Keep this as a single small documentation task focused on Support Packet sanitization behavior.

Required doc touchpoint:

• Update docs/source/administration-guide/manage/admin/generating-support-packet.rst.

What to change:

• In the section that lists configuration values automatically sanitized during Support Packet generation, add the four newly redacted fields:
• FileSettings.ExportAmazonS3SecretAccessKey
• ElasticsearchSettings.ClientKey
• ServiceSettings.GoogleDeveloperKey
• ServiceSettings.GiphySdkKey
• Preserve the existing page voice, structure, and list style.
• Do not add implementation detail about FakeSetting internals beyond what is necessary to describe user-visible sanitization behavior.
• Optionally verify whether this same explicit sanitized-fields list appears elsewhere on the same page and keep it consistent if duplicated, but do not expand scope beyond this area.

Output requirements:

• Provide the proposed doc text change.
• Name the exact page updated.
• Include a brief before/after summary of what was inaccurate before and how the update fixes it.
• Reference Mattermost v11.6.0 because the PR milestone is v11.6.0.

[claude]

Claude finished @Combs7th's task in 1m 45s —— View job • claude/issue-8873-20260409-2226 • Create PR ➔

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Tasks

• Gather context and understand the request
• Read CLAUDE.md for repo-specific guidelines (no CLAUDE.md found)
• Read the target RST file to understand current structure
• Locate the sanitized fields section (line 44)
• Add the four new sanitized fields
• Commit and push changes

Summary

Page updated: source/administration-guide/manage/admin/generating-support-packet.rst

Before: The "Santitize confidential data" section listed 15 configuration fields automatically redacted during Support Packet generation, ending with ServiceSettings.SplitKey. The following fields introduced in Mattermost v11.6.0 were missing:

• FileSettings.ExportAmazonS3SecretAccessKey
• ElasticsearchSettings.ClientKey
• ServiceSettings.GoogleDeveloperKey
• ServiceSettings.GiphySdkKey

After: All four fields are appended to the existing comma-separated list, with a (from Mattermost v11.6.0) qualifier to indicate when the expanded coverage was introduced. The voice, structure, and list style are preserved.

The change reflects sanitization coverage improvements added in mattermost/mattermost#35346, merged for the v11.6.0 milestone.

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