neutron_port: Ensure network and subnet are created
neutron_port: Ensure network and subnet are created

This change fixes the wrong key used to look up the neutron_network
resource which should be created before a neutron_port is created.

Also, additional requirement for neutron_subnet is added, so that
the subnet is created before a port which belongs to that subnet is
created.

Change-Id: Ie8d379d5dbb7b4095d8dc35311170ab2e07b6a76

openstack/puppet-neutron,openstack/puppet-neutron