zesty: exfat-utils no longer installed by default

[Jeremy Bicha]

During the zesty development cycle, udisks2 gained a recommends on
exfat-utils (synced from Debian). Because the Main Inclusion Request
for exfat-utils wasn't processed in time, that recommends has now been
dropped to a suggests for zesty. I'm emailing this list to notify
Ubuntu flavors since most flavors are able to include universe
packages like this one.

https://launchpad.net/bugs/1649537

Thanks,
Jeremy Bicha