Implement a puppet facts action that show fact differences between facter 3 and facter 4

The upgrade process should check the facts retrieved by Facter 3 and the Facts provided by Facter 4. If there are differences a warning should be displayed.

Implement a puppet facts check action to the facts face to check if there are any differences between facter 3 and facter 4. This action should filter out the core facts that change over time (eg. Memory, Uptime, etc)

We also need a bolt task implemented that is able to run the puppet facts diff command (this will be covered in a MODULES different ticket)