Add experimental flag for enabling CDK lookups #330

Job	Run time
Run lint	39s
Build and Test	1m 52s
comment-notification	0s
integration-test / acceptance-tests (3, 0)	24m 6s
integration-test / acceptance-tests (3, 1)	13m 43s
integration-test / acceptance-tests (3, 2)	27m 18s
acceptance-test / acceptance-tests (3, 0)	27m 46s
acceptance-test / acceptance-tests (3, 1)	36m 6s
acceptance-test / acceptance-tests (3, 2)	12m 50s
sentinel	4s
	2h 24m 24s

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