Updates for 0.8.1
Expose host machine host and port
Auto create topics and rebalance leaders as necessary
More sane env-specific configuration
Ability to override advertised hostname
Annoying name
Advertise the right name
Miscellaneous config corrections
Don't overwrite with empty
Default to 2181
Annoying lack of logging
Stupid tagging bug
Config fix
Merge remote-tracking branch 'origin/v0.8.1'

Conflicts:
	Dockerfile
	config/server.properties.default
	start.sh