update config.yaml with neutron
update config.yaml with neutron

Currently, the config.yaml file needs
to be updated to ensure that the neutron
classes are included.

The commit adds a sed command to ensure
that network_service is set to neutron
when havana is being installed.

michaeltchapman/vagrant-consul,phchoic/puppet_openstack_builder,michaeltchapman/puppet_openstack_builder,CiscoSystems/puppet_openstack_builder--to-be-deleted,CiscoSystems/openstack-installer--to-be-replaced-by-puppet_openstack_builder,CiscoSystems/openstack-installer--to-be-replaced-by-puppet_openstack_builder,CiscoSystems/puppet_openstack_builder--to-be-deleted,phchoic/puppet_openstack_builder,michaeltchapman/puppet_openstack_builder,CiscoSystems/puppet_openstack_builder--to-be-deleted,CiscoSystems/puppet_openstack_builder,michaeltchapman/puppet_openstack_builder,phchoic/puppet_openstack_builder,CiscoSystems/puppet_openstack_builder,CiscoSystems/openstack-installer--to-be-replaced-by-puppet_openstack_builder,michaeltchapman/vagrant-consul