The Frome package has not been re-enabled in all the recipes that it's
used in after it was temporarily disabled to ease generation of the first
images after the Buster rebase. Re-enable where it makes sense and remove
commented out entries where it is not actually required.

Additionally, after the rebase to Buster some AppArmor profiles have
become problematic and prevent the components from working. This is the
case for Frome, put the AppArmor policy in complain mode for now.

Signed-off-by: Martyn Welch <martyn.welch@collabora.com>