Prepare Etcd storage for 2.0.x release

[fatih]

Upcoming 0.5 has many changes and also flag deprecations such as --peers which we are using. The following guide shows how clusterting is done in 0.5 and what is being used for the --peers.
https://github.com/coreos/etcd/blob/master/Documentation/0.5/clustering.md

[fatih]

It seems our Travis builds fails right now due to old Etcd version. We need to vendor our deps.

[fatih]

Etcd is now at 2.0.x, we need to make it ready for that particular version.