Correctly configure redis cluster for aws elasticache (#1651) #1997

Job	Run time
typecheck / typecheck	3m 24s
units / 🧪 Unit Tests	2m 0s
publish-worker / build (coordinator)	1m 36s
publish-worker / build (docker-provider)	1m 1s
publish-webapp / publish	3m 11s
publish-worker / build (kubernetes-provider)	40s
	11m 52s

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