We want to test if virt-v2v can find drivers using the *.inf files.
For this to work, one field is important:
[Version]
DriverVer = 07/17/2013,6.1.0.10018
Copy the [Version] section header and DriverVer field from the real
*.inf files to our fake *.inf files, which is enough for testing.
See also:
https://www.redhat.com/archives/libguestfs/2015-October/msg00352.html
Note that the fields are case insensitive and may or may not contain
spaces.
The virtio-win ISO has a different layout and superset of drivers
compared to the virtio-win RPM directory. Previously we simply put
all the RPM files into the fake ISO. Instead create a fake ISO which
has the same layout and (fake) drivers as the real ISO.
