Fix the hiera shortcut
Fix the hiera shortcut

- without writing the defaults.yaml file, agent runs
  on student machines won't be able to see the existence
  of teams (if only master.puppetlabs.vm.yaml exists)

joshsamuelson/puppetlabs-training-bootstrap,kjhenner/puppetlabs-training-bootstrap,carthik/puppetlabs-training-bootstrap,samuelson/education-builds,puppetlabs/puppetlabs-training-bootstrap,marrero984/education-builds,samuelson/puppetlabs-training-bootstrap,petems/puppetlabs-training-bootstrap,johnduarte/puppetlabs-training-bootstrap,carthik/puppetlabs-training-bootstrap,samuelson/puppetlabs-training-bootstrap,wbhamilton/puppetlabs-training-bootstrap,wbhamilton/puppetlabs-training-bootstrap,samuelson/puppetlabs-training-bootstrap,puppetlabs/puppetlabs-training-bootstrap,kjhenner/puppetlabs-training-bootstrap,carthik/puppetlabs-training-bootstrap,puppetlabs/puppetlabs-training-bootstrap,klynton/puppetlabs-training-bootstrap,klynton/puppetlabs-training-bootstrap,johnduarte/puppetlabs-training-bootstrap,johnduarte/puppetlabs-training-bootstrap,samuelson/education-builds,marrero984/education-builds,wbhamilton/puppetlabs-training-bootstrap,samuelson/education-builds,joshsamuelson/puppetlabs-training-bootstrap,petems/puppetlabs-training-bootstrap,kjhenner/puppetlabs-training-bootstrap,joshsamuelson/puppetlabs-training-bootstrap,klynton/puppetlabs-training-bootstrap,marrero984/education-builds,petems/puppetlabs-training-bootstrap