clean up docs

docs/09-cleanup.md

@@ -33,7 +33,11 @@ gcloud compute addresses delete kubernetes
 gcloud compute firewall-rules delete \
   kubernetes-allow-api-server \
   kubernetes-allow-healthz \
-  kubernetes-nginx-service
+  kubernetes-allow-icmp \
+  kubernetes-allow-internal \
+  kubernetes-allow-rdp \
+  kubernetes-nginx-service \
+  kubernetes-allow-ssh
 ```
 
 ```
@@ -43,6 +47,10 @@ gcloud compute routes delete \
   kubernetes-route-10-200-2-0-24
 ```
 
+```
+gcloud compute networks subnets delete kubernetes
+```
+
 ```
 gcloud compute networks delete kubernetes
 ```