common.yaml

tomcat_instances:
  - default:
      server_port: 8005
      http_connector_port: 8080
      ajp_connector_port: 8009

data.pp

class tomcat::data {

  $tomcat_instances = [ { default => { server_port => 8005, http_connector_port => 8080, ajp_connector_port => 8009 } } ]

}