Add Redshift active record adapter #6416

Job	Run time
run_rubocop	27s
multiverse (agent, 2.4.10)	2m 27s
multiverse_services_1 (2.4.10)	2m 58s
multiverse (agent, 3.4.1)	3m 37s
infinite_tracing (2.7.8)	35s
multiverse_services_2 (2.4.10)	3m 7s
multiverse_services_1 (3.4.1)	3m 43s
multiverse (ai, 2.4.10)	1m 4s
infinite_tracing (3.4.1)	10m 11s
multiverse_services_2 (3.4.1)	3m 30s
multiverse (ai, 3.4.1)	1m 30s
multiverse (background, 2.4.10)	1m 50s
multiverse_services_kafka (2.4.10)	2m 23s
multiverse_services_mysql_pg (2.4.10)	3m 35s
multiverse (background, 3.4.1)	1m 58s
multiverse_services_kafka (3.4.1)	5m 41s
unit_tests (2.4.10)	4m 10s
multiverse_services_mysql_pg (3.4.1)	2m 32s
multiverse (background_2, 2.4.10)	4m 21s
unit_tests (3.4.1)	5m 4s
multiverse (background_2, 3.4.1)	5m 54s
multiverse (frameworks, 2.4.10)	1m 52s
multiverse (frameworks, 3.4.1)	3m 50s
multiverse (httpclients, 2.4.10)	2m 39s
multiverse (httpclients, 3.4.1)	2m 28s
multiverse (httpclients_2, 2.4.10)	2m 32s
multiverse (httpclients_2, 3.4.1)	2m 5s
multiverse (rails, 2.4.10)	3m 1s
multiverse (rails, 3.4.1)	5m 38s
multiverse (rest, 2.4.10)	4m 15s
multiverse (rest, 3.4.1)	5m 39s
simplecov	26s
	1h 45m 2s

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