instack-undercloud is no longer in use by the TripleO project. Removing
the code to avoid confusion. Stable branches will continue to be
maintained for their life however no new features should be added.
Change-Id: I63a813c7c1ffd30ca30017133d31a497b77a9a4d
Blueprint: remove-instack-undercloud
When using isntack-virt-setup it makes sense to just go ahead and always
enable IP forwarding so that Overcloud nodes can get external access.
Change-Id: Ie720f34c17cc89946615b2fb091be3352050e24c