fix(quickstart): Pin versions to use v1beta1 until CAPO supports it

Signed-off-by: Jan Schoone <jan.schoone@uhurutec.com>

Author: jschoone

providers/openstack/scs2/README.md

@@ -1,5 +1,12 @@
 # Cluster Stacks
 
+## Prerequisites
+
+- kind
+- kubectl
+- helm
+- clusterctl (v1.10x)
+
 ## Getting started
 
 ```sh
@@ -11,7 +18,7 @@ export CLUSTER_TOPOLOGY=true
 export EXP_CLUSTER_RESOURCE_SET=true
 export EXP_RUNTIME_SDK=true
 kubectl apply -f https://github.com/k-orc/openstack-resource-controller/releases/latest/download/install.yaml
-clusterctl init --infrastructure openstack
+clusterctl init --infrastructure openstack:v0.12.6
 
 kubectl -n capi-system rollout status deployment
 kubectl -n capo-system rollout status deployment