Add benchmarking to DDB v2 mapper #3208

Job	Run time
check-s3-related-changes	1m 7s
s3-regression-tests-download	3m 20s
s3-regression-tests-upload-crt	2m 21s
s3-regression-tests-upload-async	4m 23s
s3-regression-tests-control-plane	3m 20s
s3-regression-tests-upload-sync	3m 22s
s3-regression-tests-upload-multi	4m 22s
	22m 15s

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