Add more duration info to SG request stats log #7804

Job	Run time
lint	9m 42s
test	27m 1s
build	7m 27s
integration-configs-db	3m 54s
integration (requires_docker)	6m 50s
integration (integration_alertmanager)	4m 45s
integration (integration_backward_compatibility)	10m 40s
integration (integration_memberlist)	8m 28s
integration (integration_querier)	16m 10s
integration (integration_ruler)	5m 46s
integration (integration_query_fuzz)	3m 15s
deploy_website	0s
deploy	0s
	1h 43m 58s

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