panic: Required OPERATOR_NAMESPACE environment variable is either missing or empty

goroutine 1 [running]:
github.com/ceph/ceph-csi-operator/internal/controller.init.func1(...)
	github.com/ceph/ceph-csi-operator/internal/controller/defaults.go:69
github.com/ceph/ceph-csi-operator/internal/utils.Call[...](...)
	github.com/ceph/ceph-csi-operator/internal/utils/core.go:177
github.com/ceph/ceph-csi-operator/internal/controller.init()
	github.com/ceph/ceph-csi-operator/internal/controller/defaults.go:66 +0x218