make glossary, security, regions and endpoints hidden

otc_metadata/data/services/gloss.yaml

@@ -1,5 +1,5 @@
 ---
-environment: internal
+environment: hidden
 repositories:
 - environment: internal
   repo: docs/glossary

otc_metadata/data/services/rae.yaml

@@ -1,5 +1,5 @@
 ---
-environment: internal
+environment: hidden
 repositories:
 - environment: internal
   repo: docs/regions-and-endpoints

otc_metadata/data/services/sec.yaml

@@ -1,5 +1,5 @@
 ---
-environment: internal
+environment: hidden
 repositories:
 - environment: internal
   repo: docs/security