Add pdf environment switch

Reviewed-by: Gode, Sebastian <sebastian.gode@t-systems.com>
Co-authored-by: tischrei <tino.schreiber@t-systems.com>
Co-committed-by: tischrei <tino.schreiber@t-systems.com>

otc_metadata/data/documents/iam-permissions.yaml

@@ -3,7 +3,8 @@ hc_location: permissions
 environment: internal
 html_location: docs/iam/permissions
 link: /identity-access-management/permissions/
-pdf_name: iam-permissions
+pdf_enabled: true
+pdf_environment: internal
 rst_location: doc/permissions/source
 service_type: iam
 title: Permissions