Use Chef search (role:cassandra) to look up seed nodes
Use Chef search (role:cassandra) to look up seed nodes

If search is not available, we fall back to using node's own
IP address by default.

Fixes #204.

michaelklishin/cassandra-chef-cookbook,vdemonchy/cassandra-chef-cookbook,jfwm2/cassandra-chef-cookbook,vkhatri/cassandra-chef-cookbook,alrf/cassandra-cookbook,TD-4242/cassandra-chef-cookbook,michaelklishin/cassandra-chef-cookbook,alrf/cassandra-cookbook,TD-4242/cassandra-chef-cookbook,vdemonchy/cassandra-chef-cookbook,msilvey/cassandra-chef-cookbook,jfwm2/cassandra-chef-cookbook,adityagodbole/cassandra-chef-cookbook,adityagodbole/cassandra-chef-cookbook,michaelklishin/cassandra-chef-cookbook,msilvey/cassandra-chef-cookbook,vdemonchy/cassandra-chef-cookbook,alrf/cassandra-cookbook,criteo-forks/cassandra-chef-cookbook,TD-4242/cassandra-chef-cookbook,adityagodbole/cassandra-chef-cookbook,vkhatri/cassandra-chef-cookbook,jfwm2/cassandra-chef-cookbook,criteo-forks/cassandra-chef-cookbook,vkhatri/cassandra-chef-cookbook,criteo-forks/cassandra-chef-cookbook,msilvey/cassandra-chef-cookbook