Update launch_units to reflect new file location.
Add terraform state and cluster vars to .gitignore.
Add syslog topic to Kafka.
Move kafka systemd lines for clarity.
Rename syslog_gollector systemd unit (underscores!)
Remove zookeeper data units from spec.
Use underscores in systemd syslog_gollector unit (part II)
Add registration for zookeeper round-robin DNS.
Reformat Kafka presence service file.