Update test to match generation command
Update test to match generation command

The generation command works now without manual modification. Presumably
it didn't work earlier because of the U-boot environment flags were
initialized to 1 and now they're initialized to 0. That change happened
to make `fwup`'s output match `mkenvimage` exactly.

fhunleth/fwup,fhunleth/fwup,fhunleth/fwup