Code review comment for lp:~salgado/linaro-image-tools/package-media-create

I didn't land this branch myself because there was one remaining
unresolved issue: the python package is called media_create whereas the
deb package is named python-linaro-media-create.

The easier thing to do would be to rename the deb to match the python
package's name, but media_create is too generic a name, so I wanted to
rename the python package to linaro_media_create.