NVMe over Fabrics support for nvme-cli

[Steve Wise]

> > Hey Christoph, looks like the man page needs to be updated.
> 
> Or rather added..
> 
> > Also, connect-all doesn't seem to work for me.  Am I doing something wrong?
> 
> Yes!
> 
> >
> > [root at stevo1 nvme-cli]# nvme discover -t rdma -a 10.0.1.14 -s 4420
> > Discovery Log Number of Records 7, Generation counter 51
> > =====Discovery Log Entry 0======
> > trtype:  1
> > adrfam:  0
> 
> adrfam = 0 means you didn't set the address family on the target.
> I'll also add checking for a valid adrfam on the target to the TODO list.

I updated my json input file to add "ipv4" to the "adrfam" entries, and
connect-all works like a champ.

Thanks,

Steve.