spliting metadata

Reviewed-by: gtema <artem.goncharov@gmail.com>
Co-authored-by: Hasko, Vladimir <vladimir.hasko@t-systems.com>
Co-committed-by: Hasko, Vladimir <vladimir.hasko@t-systems.com>

otc_metadata/data/documents/dbss-umn.yaml

@@ -0,0 +1,9 @@
+---
+environment: internal
+html_location: docs/dbss/umn
+link: /database-security-service/umn/
+pdf_name: dbss-umn
+rst_location: umn/source
+service_type: dbss
+title: User Guide
+type: umn