Comment 5 for bug 1605052

This is a better version:

root@bod:/tmp# dpkg -i ubuntu-core-launcher_1.0.38-0ubuntu0.16.04.2_amd64.deb snap-confine_1.0.38-0ubuntu0.16.04.2_amd64.deb
(Reading database ... 13773 files and directories currently installed.)
Preparing to unpack ubuntu-core-launcher_1.0.38-0ubuntu0.16.04.2_amd64.deb ...
Unpacking ubuntu-core-launcher (1.0.38-0ubuntu0.16.04.2) over (1.0.27.1) ...
Selecting previously unselected package snap-confine.
Preparing to unpack snap-confine_1.0.38-0ubuntu0.16.04.2_amd64.deb ...
Unpacking snap-confine (1.0.38-0ubuntu0.16.04.2) ...
Setting up snap-confine (1.0.38-0ubuntu0.16.04.2) ...
Setting up ubuntu-core-launcher (1.0.38-0ubuntu0.16.04.2) ...
Removing obsolete conffile /etc/apparmor.d/usr.bin.ubuntu-core-launcher ...

which makes ubuntu-core-launcher not arch:all but arch:any to workaround a bug
in dpkg-maintscript-helper that does not deal with changes in the architecture.