Fixes bug 970406 - pull ADI/blocklist pings from Hive with crontabber

This job fetches ADI aggregates daily from Hive using a SQL query. Many thanks to @peterbe and @lars for help with the mocking, which proved to be daunting.
If you put a `(` here you won't need the `\` characters. E.g.
```
        columns = (
            'report_date',
            'product_name',
            'product_os_platform',
            'product_os_version',
            'product_version',
            'build',
            'build_channel',
            'product_guid',
            'count'
        )
```