feature(makefs): Add logging of all activities
fix(makefs): Match 0, not just numbers ending in zero

- Without the space beforehand, this would match partitions that were
  aligned to a 0-ending boundry or a size that ended in 0. This caused
  the configdrive to be written into the wrong partition.
fix(log): Use basename instead of hardcoding name
Merge pull request #30 from rackerlabs/jay/FixMakefsScript

Fixes and logging for makefs script