Set default repos/puppets for releases

Since Fuel 5.1 repos/puppets paths are sent by Nailgun to Astute.
So we need to set defaults here, and remove them from Astute in
order to make our code more clear and centralized.

Closes-Bug: #1342168
Change-Id: Id0917d1044824879d348cf1ff2f8fa1588d716fb
Merge "Set default repos/puppets for releases"