This role assumes that only one tomcat instance is defined and running on the system.

Important note: the variable 'http_port' needs to be defined earlier in the calling playbook.

What the role does:

- Install the sudoers config that permits the tomcat user to restart
the service
- Install the script that allows the tomcat user to start and stop the
service without using the full path
- Install the README file that explains where the options files are
placed and how start/stop the service