fixed nodes to use .name, not .hostname, backwards compatible
slight optimization
added todo about hostname lookup
node_selector cleanup
fix to .fail in service monitor task
Merge pull request #262 from Codeacious/jrm_monitor_task_fix

ServiceInstanceMonitorTask.fail fix
style fix
Merge pull request #260 from Codeacious/jrm_service_state_fix

Fixed service data to use node.name, with backwards compatibility
Merge branch 'release_0.6.2' of https://github.com/Yelp/Tron into jrm_parallel_store_trond