[pull] master from cortexproject:master #1456

Job	Run time
build	4m 20s
lint	18m 47s
test	17m 48s
integration-configs-db	2m 3s
integration (requires_docker)	5m 0s
integration (integration_alertmanager)	3m 53s
integration (integration_backward_compatibility)	7m 37s
integration (integration_memberlist)	7m 19s
integration (integration_querier)	12m 51s
integration (integration_ruler)	3m 52s
integration (integration_query_fuzz)	1m 53s
deploy_website	0s
deploy	0s
	1h 25m 23s

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