test the fix for text versions

Signed-off-by: Alfredo Deza <alfredo.deza@inktank.com>
fallback to 0 for text garbage

Signed-off-by: Alfredo Deza <alfredo.deza@inktank.com>
Merge pull request #244 from alfredodeza/9624

handle the weirdness we do for `sid` releases of debian