herp derp.
correct spacing with erb variables and code indentation for case matches.
@conf_file returns the conf file with .conf
lookup_resources now passes the resource correctly. improved error reporting.
pass run_context to the lookup so that we can look at the actual ResourceCollection. pass logstash_instance as a symbol.
pass the conf_file variable to the init template via the results of the conf_file method which looks up the logstash instance resource and queries its conf_dir attribute.
pass run_context to lookups. memoize the lookup on conf_dir.