Unable to specify top_scope_variables configuration parameter with CLI interface

[jcharaoui]

Use Case

Our manifests use the top-scope $role variable in several places, but our linting setup, both with vim-ale and git pre-receive hook invoke puppet-lint on the command-line interface, and this is flagged.

Describe the Solution You Would Like

Add a --top-scope-variable option to the puppet-lint binary, so we're able to set --top-scope-variables=role in the configuration file.

Describe Alternatives You've Considered

In have been using PuppetLint.configuration.top_scope_variables = ['role'] in a config file in combiation with --load=config-file in .puppet-lint.rc, which is a somewhat convoluted workaround.