Update cloudscale decommissioning instructions

docs/modules/ROOT/pages/how-tos/cloudscale/decommission.adoc

@@ -59,6 +59,13 @@ kubectl delete svc --field-selector spec.type=LoadBalancer -A
 kubectl delete loadbalancers -A --all
 ----
 
+. Disable autoscaling
++
+[source,bash]
+----
+kubectl delete machineautoscaler -A --all
+----
+
 . Delete all PVs
 +
 [source,bash]
@@ -124,6 +131,13 @@ terraform destroy
 popd
 ----
 
+. Delete remaining cloudscale server groups
++
+[source,bash]
+----
+TODO -- we don't have anything to identify server groups by cluster
+----
+
 . After all resources are deleted we need to remove the buckets
 +
 [source,bash]
@@ -134,7 +148,7 @@ response=$(curl -sH "Authorization: Bearer ${CLOUDSCALE_API_TOKEN}" \
   jq -e ".[] | select(.display_name == \"${CLUSTER_ID}\")")
 
 # configure minio client to use the bucket
-mc config host add \
+mc alias set \
   "${CLUSTER_ID}" "https://objects.${REGION}.cloudscale.ch" \
   $(echo $response | jq -r '.keys[0].access_key') \
   $(echo $response | jq -r '.keys[0].secret_key')
@@ -162,7 +176,7 @@ At this point in the decommissioning process, you'll have to extract the Restic
 [source,bash]
 ----
 # configure minio client to use the bucket
-mc config host add \
+mc alias set \
   "${CLUSTER_ID}_backup" "https://objects.${BACKUP_REGION}.cloudscale.ch" \
   $(echo $response | jq -r '.keys[0].access_key') \
   $(echo $response | jq -r '.keys[0].secret_key')

docs/modules/ROOT/partials/cloudscale/prerequisites.adoc

@@ -9,3 +9,4 @@ The following CLI utilities need to be available locally:
 * `jq`
 * `yq` https://mikefarah.gitbook.io/yq[yq YAML processor] (version 4 or higher)
 * macOS: `gdate` from GNU coreutils, `brew install coreutils`
+* `mc` TBD