Re: [PATCHv2 3/5] schema: Add nvme controller and nvme-ns bus defination

So here the 'serial' is declared as mandatory. It's optional in the XML parser/formatter and mandatory in the commandline formatter. With other devices it's optional so it's most likely going to need an <optional> block.

This series is also completely lacking documentation (docs/formatdomain.rst) documenting bot the new controller and disk type.

As described earlier, the intention is for the serial field to be mandatory. Perhaps the parser/formatter handling led to some confusion? Any suggestions are very welcome. I'll add documentation for it in docs/formatdomain.rst.