Provide Hannibal region monitoring service for hadoop cluster

1. This pull request provides hannibal cookbook.
2. There are two recipes: one to build hannibal tarball from source(hannibal_build) and other to configure,install and start hannibal as an upstart service (hannibal_hbase).
3. Mysql db, if selected, is configured for hannibal.
If you set this property to anything other than active, that node will be in a passive mode i.e. it will not collect metrics and merely display what is present in the database.