Add a diatomic group.
Consolidate Datomic and its transactor into one service. Also, add the
Riak cookbook as a dependency so that we can populate it with Zookeeper
nodes.
Add explicit log and data directory attributes.
Add a Zookeeper cookbook as a dependency.
Update paths to “datomic-transactor” instead of just “datomic”.
Add attributes for transactor encrypt-channel and heartbeat-interval.
Add exec to transactor start script.
Make Datomic protocol “free” for test suite.