Fixes bug 965675 - update fakedata for build_type, update_channel
* added ProductBuildTypes to fakedata
* added update_channel to RawAdu
* Fix some PEP8 formatting
Merge pull request #1850 from selenamarie/bug965675-missing-product-build-type-data

Fixes bug 965675 - update fakedata for build_type and update_channel