Add obsutil (#66)

Reviewed-on: #66
Reviewed-by: Hasko, Vladimir <vladimir.hasko@t-systems.com>
Co-authored-by: Sabelnikov, Dmitriy <dmitriy.sabelnikov@t-systems.com>
Co-committed-by: Sabelnikov, Dmitriy <dmitriy.sabelnikov@t-systems.com>

otc_metadata/data/documents/obs-tool-guide-obsutil.yaml

@@ -0,0 +1,13 @@
+---
+hc_location: utiltg/obs
+html_location: docs/obs/tool-obsutil
+link: /object-storage-service/tool-guide-obsutil/
+rst_location: doc/tool-obsutil/source
+service_type: obs
+title: Tool Guide (obsutil)
+type: tool-guide-obsutil
+cloud_environments:
+  - name: eu_de
+    visibility: internal
+    pdf_visibility: internal
+    pdf_enabled: true