[WIP] Automate model /system/event changes.

Removed vm_alert_cpu_ready instance, added parse_provider_category
to system/process/event, and reroute other instances for new model
changes.

https://bugzilla.redhat.com/show_bug.cgi?id=1139325
@tinaafitz We do not want to call automate scripts here because it will cause a ruby process to get created for each event object being processed which would kill performance.  Instead we should move the call to the individual event instances that need it.