add jvm_opts and gc_opts and ipv4_only options
make installation of rabbitmq optional
make kibana port configurable http_port
Merge pull request #25 from jedi4ever/flexible_config

More flexible config options java_opts, gc_opts, rabbitmq flag, kibana http_port
Sundry small bugs fixes from Drillinginfo.
Merge pull request #1 from don-stuart/di

Sundry small bugs fixes from Drillinginfo.
Templates should actually use log_dir attribute.
Logrotate resources should use the log_dir attribute.
The log directory won't create itself.
The command line parameter should specify the log file, not the log directory.
Merge pull request #2 from don-stuart/di

Cookbook should actually use log_dir attribute.
correct logger.conf to shipper.conf
Added a recipe to install and execute a community provided
ElasticSearch/Logstash index cleaner.
added join_groups attribute to join some Operative System groups
agent and server config file generator improved: some small fixes when using multiple filters/inputs, moved some logic to a library, stdout disabled by default.
Adhere to FC001
Fix spaces and quoting for consistency
Adhere to FC001
Adhere to FC007
Update README.md