Add unsupported framework.
Update all the nodesets.
Merge branch 'aix' into 3.0.x
Windows osfamily is lowercase

https://github.com/puppetlabs/facter/blob/master/lib/facter/kernel.rb#L17
(cherry picked from commit ff5972fd2dd7dfc9bb0f3ad0c251eae4b00cce52)