Add contextual information and query statistics to log (#5604) #60

Job	Run time
lint	7m 43s
test	34m 17s
build	5m 46s
integration-configs-db	3m 22s
integration (requires_docker)	6m 33s
integration (integration_alertmanager)	4m 42s
integration (integration_backward_compatibility)	11m 20s
integration (integration_memberlist)	9m 20s
integration (integration_querier)	15m 36s
integration (integration_ruler)	5m 12s
integration (integration_query_fuzz)	3m 12s
deploy_website	0s
deploy	0s
	1h 47m 3s

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