Moving elastic-http-frontend-connector to frontend_connectors package… #6522

Job	Run time
build-log-generator (log-generator)	38s
quesma-test-and-compile (quesma)	1m 17s
build-quesma-docker-image / build-quesma-docker-image (quesma)	58s
smoke-test	2m 27s
	5m 20s

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