Include option to turn OFF alerta's De-Duplication

[GenLN]

Is your feature request related to a problem? Please describe.
Alerta deduplication have wrong logic. It's gonna deduplicate based on event-environment-resource and if severity same. I have same event(alertname) same environment and resource is "N/A" it does deduplication and shows only one alert and others as duplicate count. My alert is already deduplicated on the alertmanager side.

Describe the solution you'd like
Configure an option to change how de-duplication is working, based on which column values or allow user to turn off alerta's deduplication as per deduplication already implemented on alertmanager. Or include both options, but i believe the easiest way is to offer config via ENV var to turn of deduplication. Like DEDUPLICATION: "False"

Describe alternatives you've considered
don't want to change alerts definitions and alertmanager config.