Migrate /test/apm_api_integration/tests/span_links to be deployment-agnostic API tests#200140

miloszmarcinkowski merged 4 commits intoelastic:mainelastic/kibana:mainfrom

miloszmarcinkowski:198990-apm-migrate-testapm_api_integrationtestsspan_links-to-be-deployment-agnostic-api-testsmiloszmarcinkowski/kibana:198990-apm-migrate-testapm_api_integrationtestsspan_links-to-be-deployment-agnostic-api-testsCopy head branch name to clipboard