Use localstack in storage tests #152

Job	Run time
report-evictions (fixtures)	1m 4s
report-evictions (http)	1m 5s
report-evictions (http_typesafe)	1m 24s
report-evictions (json)	1m 6s
report-evictions (typesafe_app)	1m 23s
report-evictions (monitoring)	1m 6s
report-evictions (monitoring_typesafe)	1m 25s
report-evictions (messaging)	1m 22s
report-evictions (messaging_typesafe)	1m 29s
report-evictions (storage)	1m 0s
report-evictions (storage_typesafe)	1m 8s
report-evictions (elasticsearch)	1m 25s
report-evictions (elasticsearch_typesafe)	1m 24s
report-evictions (sierra)	1m 3s
report-evictions (sierra_typesafe)	1m 9s
collate-evictions	5s
	18m 38s

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