Display JMX data on Graphite UI in a user friendly way

Changes include

- Group JMX data on type and also provide the host name so that users can easily navigate the Graphite UI. This is a request from chef-bcpc issue [#311](https://github.com/bloomberg/chef-bcpc/issues/311) .
- Point to a new [JMXTrans Cookbook repo](https://github.com/bijugs/jmxtrans-cookbook) which includes option to set an alias which is required for the previous improvement
- Overwrite the correct attribute for JMX port in the community cookbook for Kafka. This was incorrectly set in PR #27 .