[pull] master from cortexproject:master #1429

Job	Run time
build	4m 3s
lint	18m 41s
test	17m 58s
integration-configs-db	1m 49s
integration (requires_docker)	5m 1s
integration (integration_alertmanager)	3m 45s
integration (integration_backward_compatibility)	11m 16s
integration (integration_memberlist)	7m 14s
integration (integration_querier)	12m 40s
integration (integration_ruler)	3m 46s
integration (integration_query_fuzz)	1m 43s
deploy_website	0s
deploy	0s
	1h 27m 56s

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