Support the definition of an mq broker without requiring that a stomp_port is defined.
Support the definition of an mq broker without requiring that a stomp_port is defined.

Fixes #17

realityforge/chef-glassfish,predictivelogic/chef-glassfish,predictivelogic/chef-glassfish,realityforge/chef-glassfish,hopshadoop/chef-glassfish,hopshadoop/chef-glassfish,predictivelogic/chef-glassfish,realityforge/chef-glassfish,hopshadoop/chef-glassfish