Add S3 send_content_md5 config and default to use MD5 #8733

Job	Run time
CodeQL	7m 29s
build	4m 40s
lint	3m 44s
test	21m 23s
integration-configs-db	2m 7s
integration (requires_docker)	5m 57s
integration (integration_alertmanager)	4m 2s
integration (integration_backward_compatibility)	7m 41s
integration (integration_memberlist)	7m 53s
integration (integration_querier)	12m 48s
integration (integration_ruler)	3m 57s
integration (integration_query_fuzz)	2m 20s
deploy	0s
deploy_website	0s
	1h 24m 1s

Provide feedback