Provisioning a VM on oVirt/RHEV via a template requires a finish template to be run over SSH in order to configure the provisioned VM. In order for Foreman to attempt to run the finish template over SSH, the compute resource needs to provide an :image capability.

From app/models/concerns/orchestration/ssh_provision.rb:

def ssh_provision?
compute_attributes.present? && capabilities.include?(:image)
end

However, ovirt doesn't (app/models/compute_resources/foreman/model/ovirt.rb):

def capabilities
[:build]
end

This prevents us from building VMs in RHEV from a RHEV template, something we would much prefer to do over kickstarting every time.