2022-01-31 Namespace ownership RBAC migrated to use a ClusterRole

[simu]

We're pleased to announce that we've migrated the namespace ownership RBAC for APPUiO Cloud to use a ClusterRole last week. This change doesn't affect the user experience, but gives us a better mechanism to make zone-wide updates to the namespace ownership mechanism.

Please see Organizations and RBAC on https://docs.appuio.cloud for the set of RBAC rules which are created for new namespaces.