Feature/hive

Initial Hive support...

- [x] Configures hive-site.xml
- [x] Configures hive-env.sh
- [x] Sets up hive-metastore package/service
- [x] Sets up hive-server package/service
- [x] Checks configuration for hive-server2
- [x] Sets up hive-server2 package/service
- [x] Tested in vagrant on CentOS 6.4
- [x] Tested in vagrant on Ubuntu 12.04