This commit adds the declaration of classroom::master::sudoers to init.p...

...p.

Declaring classroom::master::sudoers adds configuration in /etc/sudoers.d to the Puppet Master node, so that students can connect from their agent nodes to the Master over ssh, and get sudo passwordless access to the peadmin account,
s is required for the Practitioner Course Mcollective lab at:
Orchestration/Lab-control_puppet/1