Bug#830527: piuparts should ignore /var/log/apt/eipp.log.xz in purge test

[Sean Whitton]

Package: piuparts
Version: 0.71
Severity: important

Dear maintainers,

piuparts considers package purge to have failed if the file
/var/log/apt/eipp.log.xz remains, e.g.:

    2m6.4s ERROR: FAIL: Package purging left files on system:
      /var/log/apt/eipp.log.xz       not owned
    
    2m6.4s ERROR: FAIL: Installation and purging test.

This file can be created by the latest version of apt, and it shouldn't
be considered a purge failure since it's unrelated to the package being
tested.

Thanks.

-- 
Sean Whitton