The setup script is intended to give a brand new user of Greengrass to get started with Greengrass device quickly.
As part of that experience the user can get a fat bin for the Greengrass Nucleus, the script can launch the Nucleus
with the customer’s provided config if desired, optionally provision the test device as an AWS IoT Thing, create and
attach policies and certificates to it, create TES role and role alias or uses existing ones and attaches
them to the IoT thing certificate.