Code review comment for ppa-dev-tools:set-command-dependencies

Example output for the smoke test:

$ python3 -m ppa.ppa
##########################
## Ppa class smoke test ##
##########################

setting desc to 'This is a testing PPA and can be deleted'
desc is now 'This is a testing PPA and can be deleted'

name: test-ppa-dxtefi
address: ppa:bryce/test-ppa-dxtefi
str(ppa): bryce/test-ppa-dxtefi
reference: ~bryce/ubuntu/test-ppa-dxtefi
self_link: https://api.qastaging.launchpad.net/devel/~bryce/+archive/ubuntu/test-ppa-dxtefi
web_link: https://qastaging.launchpad.net/~bryce/+archive/ubuntu/test-ppa-dxtefi
description: This is a testing PPA and can be deleted
has_packages: False
architectures: amd64/arm64
dependencies: ~bryce/ubuntu/dependency-ppa-dxtefi
url: https://qastaging.launchpad.net/~bryce/+archive/ubuntu/test-ppa-dxtefi

Ready to cleanup (i.e. delete) temporary PPAs? (y/n) y
...Cleaning up test ppa...