puppet-lint plugin to check for lack of space after a comma in manifets

Note, this is code is a simple proof-of-concept code based on the puppet-lint plugin development tutorial.

To use this plugin, add the following like to the Gemfile in your Puppet code base and run bundle install.

gem 'puppet-lint-space_after_comma-check'

This plugin provides a new check to puppet-lint.

This check will raise a warning for any files that don't have space after comma except at the end of line and after semi-column (;). According to puppet style guide, semi-column is accepted after comma in the cases when multiple resources in one block is used. For example in the File definition: https://docs.puppet.com/puppet/4.9/style_guide.html#multiple-resources

WARNING: expected space after comma on line 56