It depends what you mean by 'bare metal'...
If you are talking about having dedicated physical hardware which is assigned to a single tenant in vCD - this can be done reasonably easily.
If you are talking about having a dedicated server running an OS directly (e.g. Linux or Windows) and managed by vCD and appearing in the vCD portal - this isn't possible currently, and won't become possible with NSX-V at all since there is no way to span the network. It *may* become possible in vCD once NSX-T is fully integrated and everything is switched over, but would also most likely rely on vCD being able to talk directly to the hardware management plane (e.g. Cisco UCS Manager, Dell OpenManage, HPe Synergy, etc.) to orchestrate the hardware deployment and configuration.
