tests

split getting array from listing out to _extract_listing #580

Job	Run time
lint	20s
build-ci / vault-ci	15s
build-ci / redis-ci / build	19s
build-ci / warp10-ci / build	13s
build-ci / redis-replica-ci / build	12s
tests-v2-with-vault	3m 6s
run v2 soft limit test	2m 42s
run unit tests	58s
run v2 hard limit test	2m 43s
run v1 client tests	1m 11s
run v1 server tests	1m 18s
run v1 cron tests	1m 20s
run v1 interval tests	1m 53s
	16m 30s

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