[Feature Request] add support for NPIV section

[toni-moreno]

When parsing some data we can not parse NPIV sections..

time="2018-03-09 12:35:32" level=warning msg="ProcessChunk: Lines not processed [[NPIV,T0001,0.0,0.0,0.0,0.0,8,0.0,0.0,0.0,0.0,8,0.0,0.0,0.0,0.0,8,0.0,0.0,0.0,0.0,8]] Perhaps is not in Catalog????..."

This section is not in de Nmon document....