Docs: Add cloud label to doc articles (#92007)

* add service account docs to cloud docs

* also add label to RBAC docs

docs/sources/administration/roles-and-permissions/_index.md

@@ -10,6 +10,7 @@ labels:
   products:
     - enterprise
     - oss
+    - cloud
 title: Roles and permissions
 weight: 300
 ---

docs/sources/administration/service-accounts/index.md

@@ -12,6 +12,7 @@ labels:
   products:
     - enterprise
     - oss
+    - cloud
 menuTitle: Service accounts
 title: Service accounts
 weight: 800