Add a scenario for octavia: create a simple load balanacer with HTTP
listener and pool, add 2 members and ensure that traffic is fairly
dispatched.
Change-Id: Id8596ae1940ed97c52c0ef0e8f3e0ba7888d728a
Don't use a cidr which might be routable, instead use the
IPv6 documentation prefix which should be dropped and
filtered by routers according to RFC 3849.
Change-Id: I6f0ec34f7c2178a659d6119d2e33b09f135a8caf