Centralize nvme controller reset, delete and fabrics periodic reconnects

[Sagi Grimberg]

>> You want to see it done before we merge? Or are you asking if I
>> want to see it done? I designed it to be incremental and not
>> break existing transports.
>>
>> Personally I think that pci conversion will have to be incremental
>> and gradual as we need some preparations in place first. So if you are
>> reluctant to get it in without full conversion its ok, just note it will
>> take me some time to get both pci and fc converted.
> 
> I'd really like to see at least a demo PCI conversion.

Let me see what if I can allocate some time for it.

> Guess I need to take care of it then.

If you feel this is a gating item for inclusion then your help will be
highly appreciated.