(maint) Add course codes for PI in different virtual classrooms
(maint) Add course codes for PI in different virtual classrooms

This change ensures that the PI class can be started in one of the
3 available virtual classrooms.

kjhenner/puppetlabs-training-bootstrap,kjhenner/puppetlabs-training-bootstrap,puppetlabs/puppetlabs-training-bootstrap,kjhenner/puppetlabs-training-bootstrap,puppetlabs/puppetlabs-training-bootstrap,marrero984/education-builds,marrero984/education-builds,puppetlabs/puppetlabs-training-bootstrap,marrero984/education-builds