The nvme connector in os-brick is actually for nvme over fabrics, so
to avoid future confusion we have renamed the nvme connector object
to NVMeOF to better reflect it's capability. This patch keeps the
backwards compatibility of the mapping of the initiator.NVME to
the renamed nvmeof object.
Change-Id: I97b41139f2e67ab42e2aa8075c51ef939b3cde18