Merge branch '351345-deprecate-routes-admin-geo-projects-and-admin-geo-designs' into 'master'

Resolve "Deprecate routes `/admin/geo/projects` and `admin/geo/designs`"

See merge request gitlab-org/gitlab!79352

data/deprecations/14-8-geo-deprecate-replication-detail-routes.yml

+- name: "Deprecate Geo Admin UI Routes"
+  announcement_milestone: "14.8"
+  announcement_date: "2022-02-22"
+  removal_milestone: "15.0"
+  removal_date: "2022-05-22"
+  breaking_change: false
+  reporter: nhxnguyen
+  body: |
+    In GitLab 13.0, we introduced new project and design replication details routes in the Geo Admin UI. These routes are `/admin/geo/replication/projects` and `/admin/geo/replication/designs`. We kept the legacy routes and redirected them to the new routes. In GitLab 15.0, we will remove support for the legacy routes `/admin/geo/projects` and `/admin/geo/designs`. Please update any bookmarks or scripts that may use the legacy routes.
+  stage: "Enablement"
+  tiers: ["Premium", "Ultimate"]
+  issue_url: "https://gitlab.com/gitlab-org/gitlab/-/issues/351345"
+  documentation_url: # (optional) This is a link to the current documentation page
+  image_url: # (optional) This is a link to a thumbnail image depicting the feature
+  video_url: # (optional) Use the youtube thumbnail URL with the structure of https://img.youtube.com/vi/UNIQUEID/hqdefault.jpg

doc/update/deprecations.md

@@ -727,6 +727,12 @@ The `merged_by` field in the [merge request API](https://docs.gitlab.com/ee/api/
 
 ## 14.8
 
+### Deprecate Geo Admin UI Routes
+
+In GitLab 13.0, we introduced new project and design replication details routes in the Geo Admin UI. These routes are `/admin/geo/replication/projects` and `/admin/geo/replication/designs`. We kept the legacy routes and redirected them to the new routes. In GitLab 15.0, we will remove support for the legacy routes `/admin/geo/projects` and `/admin/geo/designs`. Please update any bookmarks or scripts that may use the legacy routes.
+
+**Planned removal milestone: 15.0 (2022-05-22)**
+
 ### External status check API breaking changes
 
 WARNING: