Colour overlapping fsck entry in output

I found it really jarring to read the 'normal' text mixed in with pretty
colours.
Use custom rdial CSV dialect

This basically codifies what I consider a "usable" format for CSV, your mileage
may vary.
Omit Python 2 on 3 and 3 on 2 branches from coverage
[QA] Update testing config to use nose2 v0.5.0

This should resolve *some* of the problems with travis.