Feedback for lint check extension on non local references

[Martin Alfke]

Hi,

in the trainings I recommend to participants to never have references to declarations outside of the class to prevent hidden class or even module dependencies.
Therefor I decided to do a lint plugin: https://github.com/voxpupuli/puppet-lint-reference_on_declaration_outside_of_class-check

I am interested in other users opinion on this check.
Should it be added to module-skeleton?

Best,
Martin