Remove reliance on Amazon SQS for microservices

[kiranoot]

Ideally this should be a configurable drop in that supports both through an interface class, but a simpler replacement with a Redis/AMPQ based queue can be enough if time constrained.

Investigation of which queue systems might best support the needs of the site is required for this.

If anyone has any suggestions for a readily accessible gem that does reliable queues, that would be helpful.