v0.15.1 - Cloud-Controller-Manager - configure-cloud-routes is not disabled

[andersosthus]

Me and @paalkr did a test upgrade to 1.15 with kube-aws 0.15.1 today, and ran into an issue with the second controller not going out of NotReady state, and it looked like we had 2 separate controllers running with different views of "the world".

After a lot of digging, we found that in 0.15.1, the flag --configure-cloud-routes=false had been left out when reverting the experimental cloud controller. After we added that back in, the controllers were able to reconcile and everything was fine.

I've created a PR for this against the v0.15.x branch.