Add `elasticsearch.capture_cluster_name` config #6449

Job	Run time
run_rubocop	24s
multiverse_services_2 (2.4.10)	2m 38s
infinite_tracing (2.7.8)	41s
multiverse_services_1 (2.4.10)	2m 50s
multiverse_services_2 (3.4.1)	3m 30s
infinite_tracing (3.4.1)	10m 21s
multiverse (agent, 2.4.10)	2m 29s
multiverse_services_1 (3.4.1)	3m 43s
multiverse (agent, 3.4.1)	3m 33s
multiverse (ai, 2.4.10)	1m 9s
multiverse_services_mysql_pg (2.4.10)	2m 59s
multiverse_services_kafka (2.4.10)	2m 17s
multiverse (ai, 3.4.1)	1m 24s
multiverse_services_mysql_pg (3.4.1)	2m 37s
unit_tests (2.4.10)	4m 18s
multiverse_services_kafka (3.4.1)	8m 59s
multiverse (background, 2.4.10)	1m 53s
unit_tests (3.4.1)	4m 58s
multiverse (background, 3.4.1)	1m 58s
multiverse (background_2, 2.4.10)	4m 34s
multiverse (background_2, 3.4.1)	5m 43s
multiverse (frameworks, 2.4.10)	1m 49s
multiverse (frameworks, 3.4.1)	3m 52s
multiverse (httpclients, 2.4.10)	2m 24s
multiverse (httpclients, 3.4.1)	2m 28s
multiverse (httpclients_2, 2.4.10)	2m 30s
multiverse (httpclients_2, 3.4.1)	2m 0s
multiverse (rails, 2.4.10)	3m 29s
multiverse (rails, 3.4.1)	5m 50s
multiverse (rest, 2.4.10)	3m 56s
multiverse (rest, 3.4.1)	6m 8s
simplecov	17s
	1h 47m 41s

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