Moved all the swarm templates and template_definition code
to the magnum/drivers folder.
Moved base template_definition classes to drivers/common
folder
Change-Id: Ieff57f0f47835c35d9f17c3d7d1b7e6a40907462
Partially-Implements: blueprint bay-drivers
Co-Authored-by: Spyros Trigazis <strigazi@gmail.com>
Murali Allada