The operatingsystem fact on Fedora begins in a uppercase F

The error being thrown by this on Fedora was being silently ignored
added regex for this
Also adding adding a unit test for this
Adding the effected module to pep8 tests

Change-Id: I4e4d72e6de0bce597474434a4e18112f79913718
Merge "The operatingsystem fact on Fedora begins in a uppercase F"