cloudtools/troposphere — pull request #143 by andybotting (2014-11-10 22:56:00+00:00)
Title: Remove duplicate security_group from port

In the OS::Neutron::Port resource, we had security_group defined
twice.

According to the OpenStack documentation (http://docs.openstack.org/developer/heat/template_guide/openstack.html#OS::Neutron::Port)
this resource is optional.

This fixes https://github.com/cloudtools/troposphere/issues/142