puppet-lint hiera functions check

To add the provided lint checks into a module utilizing the PDK:

1. Add the following to the .sync.yml in the root of your module

   ---
   Gemfile:
     optional:
       ':development':
         - gem: 'puppet-lint-hiera'

2. Run pdk update from the root of the module
3. pdk validate will now also use the lint checks provided by this plugin

This plugin provides two new checks to puppet-lint

--fix support: No

This check raises an error if the hiera() function is used.

error: hiera() function call. Use lookup() instead.

--fix support: No

This check raises an error if the lookup() function is used within a class body.

error: lookup() function call found in class.

--fix support: No

This check raises an error if the lookup() function is used inside a classes parameters.

error: lookup() function call found in class params.

--fix support: No

This check raises an error if the lookup() function is used within a profile body.

error: lookup() function call found in profile class. Only use in profile params.