tchandy/octopus — pull request #195 by mz026 (2013-10-14 16:18:15+00:00)
Title: add `is_replica` to config to prevent shard database from being slave

Octopus is an amazing library!
It treats all shard as slave when `replicated: true`.
However, in some cases our shard databases do not contain all data (not replication),
so we need an attribute to tell Octopus not to treat them as replication slave.