should we enable hardware in `ucore` as long as it's not "too heavy"?

[bsherman]

Currently the README says we'll not do hardware enablement in ucore but we will do it in ucore-hci...

However... our two hardware things are pretty lightweight and I can see them being useful even for systems not wanting to have the libvirtd stack installed:

• Intel WiFi firmware - CoreOS omits this despite including Atheros WiFi firmware
• udev rules enabling full functionality on some Realtek 2.5Gbit USB Ethernet devices

Similarly, users doing containers and storage may want our two small storage addons:

• mergerfs
• snapraid

I'm inclined to make this change, but happy to take some feedback on it.

[bsherman]

I just realized vim is included which is WAY heavier than most of the packages above. Probably makes more sense to drop the heavy vim packages and include the above.

Edit: I realized the iwl-mvm-firmware is actually a bit heavy at 43MiB or so. I'm still leaning towards doing this, and it's probably a worthy trade to drop vim-enhanced to do it.