not using iaas-tools to see our public/private ip, since we have it in @nodes
using node.public_ip instead of IP-translated version, so that external callers can resolve the uaserver public ip
Merge branch 'appcontroller-not-using-iaas-tools' into timeout-on-rabbitmq-startup
reduced timeout on waiting for rabbitmq to start to match how long it takes before it fails in EC2
using IPs instead of DNS in /etc/hosts so that appscale-imageX can be ssh'ed into once more