Fix specs to support latest ActiveRecord
Restrict zbxapi version
Database schema is updated by ActiveRecord
Add changelog
Rename name of role to use consul instead of serf
Implement System#consul to connect consul
Add Consul::Event to fire/get event on consul
Replaced serf to consul
Add sync_fire method
Add logic to get the Consul event log
Fix variable name to hostname
Fix return value of fire method to return Consul event ID
Fix logic to successfully system build