Generate hosts in .internal AND .teamsnap.com

This originates from a hack I needed to do to get Corey's Kafka client 
working. However, I think it's more universally relevant. Servers should never
be communicating with each other over the public IPs, but always using either
ServiceNet or a Cloud Network.

@teamsnap/ops can anyone think of anything that might break if this were 
merged? I wouldn't merge it until next week, regardless.