disabling visibility of ddm and cci services

Reviewed-by: vladimirhasko <vladimirhasko@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/services.yaml

@@ -118,14 +118,16 @@ documents:
     service_type: cce
     title: User Guide
     type: umn
-  - html_location: docs/cci/api-ref
+  - environment: internal
+    html_location: docs/cci/api-ref
     link: /cloud-container-instance/api-ref/
     pdf_name: cci-api-ref
     rst_location: api-ref/source
     service_type: cci
     title: API Reference
     type: api-ref
-  - html_location: docs/cci/umn
+  - environment: internal
+    html_location: docs/cci/umn
     link: /cloud-container-instance/umn/
     pdf_name: cci-umn
     rst_location: umn/source
@@ -228,7 +230,7 @@ documents:
     service_type: dcs
     title: User Guide
     type: umn
-  - hc_location: api/ddm
+  - environment: internal
     html_location: docs/ddm/api-ref
     link: /distributed-database-middleware/api-ref/
     pdf_name: ddm-api-ref
@@ -236,7 +238,7 @@ documents:
     service_type: ddm
     title: API Reference
     type: api-ref
-  - hc_location: usermanual/ddm
+  - environment: internal
     html_location: docs/ddm/umn
     link: /distributed-database-middleware/umn/
     pdf_name: ddm-umn