Operator that sets OCP cluster wide storage defaults.

Ensures a default storage class exists for OCP clusters, like the addon-manager does for kubernetes clusters. Supports AWS and OpenStack. No configuration is required. The created storage class can be made non-default by editing its annotation but cannot be deleted so long as the operator runs.

Will also ensure default CSI volume plugins are installed in a future release when CSI plugins replace in-tree ones (see csi-operator).