Comment 5 for bug 1751249

@sil2100 weird, I wonder why I always ended up with the opposite but will re-check it again ...

nontheless, we need the "content:" directive on a "role: system-data" partition working for a customer project soon where some udev rules (and other files) need to be pre-installed in the system-data partition.

While I could apply hacks to do this from i.e. a customized hacked initrd I would really prefer if we could give something clean to the customer for their production images instead.