Description of problem: Nuage has many event types (thousands) e.g. "subnet_create", "subnet_delete" etc. Problem is that event type currently contains no nuage-specific substring which could cause problems when displaying event timelines, which are not per-provider. Version-Release number of selected component (if applicable): How reproducible: Always Steps to Reproduce: 1. Add Nuage privder with eventing enabled 2. Observe event types generated 3. Actual results: Event types are like: - subnet_create - subnet_delete - gateway_create - alarm_create Expected results: - nuage_subnet_create - nuage_subnet_delete - nuage_gateway_create - nuage_alarm_create Additional info: