Fixes TRAINVM-73.

Disable the check for updates and telemetry in the training vm.
Merge branch 'master' of https://github.com/puppetlabs/puppetlabs-training-bootstrap

* 'master' of https://github.com/puppetlabs/puppetlabs-training-bootstrap:
  (maint) Remove --compress option from ovftool
Merge pull request #244 from klynton/master

Fixes TRAINVM-73