Etcd is actually installed on VMs in eqiad, we want to move it/add to it 3 servers in different rack rows.
Those are going to be the 3 eqiad zookeeper hosts.
What we need is:
- Move the ZK servers out of the analytics VLAN, reinstall with jessie. This will likely require us to do one server at a time
- Add one server at a time to the etcd cluster