clean up requires again.
specify better requires path for helpers mixin
Tests for our helpers mixin.
lets use foo, bar, and baz as our test strings. should probably set these with let. add tests for conf_dir and config_file.
stub out lookup methods.
rename the logstash_has_configs? method to logstash_configured? which will return a boolean and determine if a instance is configured or not.
add our param to the logstash_configured? method.