Bump cfoundry to 0.3.18 for updated framework info

Change-Id: I16b7bcaf9f4597bc5a8a8768c057dcf446a5805f
Reviewed-on: http://reviews.cloudfoundry.org/13097
Tested-by: CI Master <cf-ci@rbcon.com>
Reviewed-by: Patrick Bozeman <pbozeman@vmware.com>