We cannot use After=snapd.service as user services cannot synchronize
with system services. Using `snap system wait seed.loaded` should work,
except for the fact that it requires polkit authentication to perform
this operation.
Signed-off-by: Zygmunt Krynicki <zygmunt.krynicki@canonical.com>
When the files we're creating in the live layer have static content, ship
them in live-build/ubuntu/includes.chroot.minimal.standard.live instead of
generating them from live-build/ubuntu/hooks/020-ubuntu-live.chroot_early.
Also fixes the fact that
live-build/ubuntu/hooks/020-ubuntu-live.chroot_early was incorrectly writing
to /root in the previous upload instead of /usr.