IAM Policies Fix

[sean-smith]

Description

Add in documentation as a workaround for #384

Changes

Changelog entry

How Has This Been Tested?

N/A

References

PR Quality Checklist

• I added tests to new or existing code
• I removed hardcoded strings and used our i18n solution instead (see here)
• I made sure no sensitive info gets logged at any time in the codebase (see here) (e.g. no user info or details, no stacktraces, etc.)
• I checked that infrastructure/update_infrastructure.sh runs without any error
• I checked that npm run build builds without any error
• I checked that clusters are listed correctly
• I checked that a new cluster can be created (config is produced and dry run passes)
• I checked that login and logout work as expected

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