Add otel_attrs_to_hec_metadata attribute to otelcol.exporter.splunkhec#3932

cgetzen wants to merge 2 commits intografana:maingrafana/alloy:mainfrom

cgetzen-forks:feat-otel_attrs_to_hec_metadatacgetzen-forks/alloy:feat-otel_attrs_to_hec_metadataCopy head branch name to clipboard