Piuparts integration in britney

As of today, britney now fetches reports from piuparts.debian.org and uses it as a part of her evaluation for package migration.  As with her RC bug check, we are only preventing (known) regressions from migrating.

The messages (subject to change) look something like:

• Piuparts tested OK
• Rejected due to piuparts regression
• Ignoring piuparts failure (Not a regression)
• Cannot be tested by piuparts (not a blocker)

If you want to do machine parsing of the Britney excuses, we also provide an excuses.yaml. In there, you are looking for “excuses[X].policy_info.piuparts.test-results”, which will be one of:

• pass
• regression
• failed
• cannot-be-tested

Enjoy.