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

[Mattia Rizzolo]

I think this list is really going out of control… I wonder if something like `arch-test` could be used to replace this hardcoded list…

before I merge this could you perhaps have a look at it?
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https://code.launchpad.net/~misterc/ubuntu-dev-tools/+git/ubuntu-dev-tools/+merge/379692
Your team Ubuntu Development Team is requested to review the proposed merge of ~misterc/ubuntu-dev-tools:pbuilder-dist_more_archs into ubuntu-dev-tools:master.