Document move of router and apiServerLoadBalancer

Author: mdbooth

docs/book/src/topics/crd-changes/v1alpha6-to-v1alpha7.md

@@ -235,3 +235,37 @@ externalRouterIPs:
 - subnet:
     name: my-subnet
 ```
+
+#### status.router and status.apiServerLoadBalancer moved out of status.network
+
+```yaml
+status:
+  network:
+    id: 756f59c0-2a9b-495e-9bb1-951762523d2d
+    name: my-cluster-network
+    ...
+    router:
+      id: dd0b23a7-e785-4061-93c5-464843e8cc39
+      name: my-cluster-router
+      ...
+    apiServerLoadBalancer:
+      id: 660d628e-cbcb-4c10-9910-e2e6493643c7
+      name: my-api-server-loadbalancer
+      ...
+```
+becomes:
+```yaml
+status:
+  network:
+    id: 756f59c0-2a9b-495e-9bb1-951762523d2d
+    name: my-cluster-network
+    ...
+  router:
+    id: dd0b23a7-e785-4061-93c5-464843e8cc39
+    name: my-cluster-router
+    ...
+  apiServerLoadBalancer:
+    id: 660d628e-cbcb-4c10-9910-e2e6493643c7
+    name: my-api-server-loadbalancer
+    ...
+```