You need first to register the images into OpenNebula. Once registered, you’ll need to create a VM Template referring the newly registered images as the VM Template disks. The deployment.* files from previous installations cannot be imported.
Another option would be to instantiate the VM in the hypervisor using virsh create, using the deployment.* files as arguments, wait for an OpenNebula monitoring cycle and import the resulting Wild VMs. We however recommend the former.