feat: support scoping plugins to consumer-groups #1909

Job	Run time
integration (kong:1.4.3)	1m 17s
integration (kong:1.5.1)	1m 25s
integration (kong:2.0.5)	1m 48s
integration (kong:2.1.4)	1m 29s
integration (kong:2.2.2)	1m 31s
integration (kong:2.3.3)	1m 17s
integration (kong:2.4.1)	1m 39s
integration (kong:2.5.1)	1m 38s
integration (kong:2.6.0)	1m 38s
integration (kong:2.7)	1m 57s
integration (kong:2.8)	1m 51s
integration (kong:3.0)	1m 38s
integration (kong:3.1)	1m 36s
integration (kong:3.2)	1m 51s
integration (kong:3.3)	2m 17s
integration (kong/kong:master-alpine)	1m 28s
	26m 20s

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