Issue running Onceover within puppet-dev-tools

[jortencio]

Describe the Bug

There seems to be an issue running onceover within the puppet-dev-tools container. The classes being tested cannot be found.

Also described here: voxpupuli/onceover#317

Expected Behavior

I expected the onceover tests to run using the suggested method in documentation:
`docker run --rm -v $(pwd):/repo puppet/puppet-dev-tools:latest
/bin/bash -c "bundle install && bundle exec onceover run spec --force --trace --parallel"

With an expected output similar to:

Steps to reproduce the behavior:

1. Run the following docker command:
   docker run --rm -u puppetdev -v ~/Projects/control-repo:/repo puppet/puppet-dev-tools:4.x /bin/bash -c "gem install bundler:2.2.29 && bundle install && bundle exec onceover run spec"

2. This results in the following output:
   

Environment

• Version: puppet-dev-tools:4.x
• Platform: MacOS (Big Sur 11.6),Docker (20.10.7)

Additional Context

I found this issue while trying to run a onceover job on Puppet CD4PE (4.9.1-Beta) in a Docker container