Draft: Add custom openstack-machine-controllers image into okd release
This new version will include a custom version of the openstack-machine-controllers image, that comes from our adapted solution under https://gitlab.cern.ch/paas-tools/okd4-deployment/cluster-api-provider-openstack.
Note that we just need this image injected into the okd release, since the machine-api-controllers uses it in order to communicate with Openstack for machine operations (create, delete, etc.)
We also need a customized version of the cluster-storage-operator so it does nothing as it doesn't work in CERN Cloud and cannot be disabled: cluster-storage-operator@release-4.7...cern_cloud_do_nothing-4.7