The /boot directory is excluded from the squashfs image only, as in that
case it is stored separately. This allows booting normal sysmocom images
as rauc slots.
The notion of "task" has been deprecated for a long time because
the word is used for different things. The new word is "packagegroup"
which describes the usage of "task-*" in a more obvious way. Dora
and master builds can fully use packagegroup-* for everything and
for edison we would need to spend some time to add a provides for
packagegroup-* to the task- group. I don't intend to work on the
edison part right now.