CIDEVSTC-84	 Implement notification delivery by rule

Implement batch processing for UNS to meet R3 scope. Aligns with updated notifications.yml.
- supports multiple delivery configurations per NR
- adds NR name to event summary in email
- supports notification types: simple, platform, site and facility using outil
- batch processing does not support digest DeliveryMode 

this PR will NOT pass buildbot until the new notifications.yml is merged:
https://github.com/ooici/ion-definitions/pull/564

@mmeisinger please review
@brianmckenna please review
@seman  please review