Cloned from launchpad blueprint https://blueprints.launchpad.net/horizon/+spec/horizon-notifications.

Description:

Horizon should use oslo.notify to emit event notifications.

This can be usefull for several reasons :
* Usage
- for diagnosis purposes by identifying user’s actions in Horizon (addressing customer support tools)
- for behavioural analysis of customer (addressing marketing tools)
- for audit purposes
- for billing
* QoS :
- for global performance analysis (response time) (adressing operational tools)
- for reliablitity and availability analysis (error and exceptions occurences) vs end-user experience (and maybe SLA violation)

Specification URL (additional information):

None