Incorrect version of openstack-cloud-controller-manager in workload clusters

[jrosser]

We found that occm 1.28.0 was installed regardless of the k8s version or cloud_provider_tag.

There is code here to search/replace in the desired version of occm

magnum-cluster-api/magnum_cluster_api/resources.py

Lines 225 to 226 in 7044ba8

	"docker.io/k8scloudprovider/openstack-cloud-controller-manager:latest",
	cloud_provider.get_image(self.cluster),

Here is the manifest it wants to patch

magnum-cluster-api/magnum_cluster_api/manifests/ccm/openstack-cloud-controller-manager-ds.yaml

Line 37 in 7044ba8

image: registry.k8s.io/provider-os/openstack-cloud-controller-manager:v1.28.0

I think that commit cae70f7 adjusted the manifest in a way that the search/replace no longer matches, so the version in the manifest is always used.

This results in inability to use the expected features in a workload cluster, in our case [KEP-1860] which was introduced in 1.30.0.