[Merge] ~misterc/ubuntu-dev-tools:pbuilder-dist_more_archs into ubuntu-dev-tools:master

[Mattia Rizzolo]

Review: Needs Fixing

looks like this slipped through me, apologies.

@misterc: if you verified that arch-test is good, I'd be fine adding that to Recommends.  Could you rebase your MR and do that instead?
-- 
https://code.launchpad.net/~misterc/ubuntu-dev-tools/+git/ubuntu-dev-tools/+merge/379692
Your team Ubuntu Development Team is subscribed to branch ubuntu-dev-tools:master.