Use the new Marshaler in the OTLP HTTP exporter (#3433)
Use the new Marshaler in the OTLP HTTP exporter (#3433)

Updates #3104

Signed-off-by: cd00dd702cda0fada5246f5c19c88b27a307b46a@gmail.com
open-telemetry/opentelemetry-collector-contrib,open-telemetry/opentelemetry-collector,open-telemetry/opentelemetry-collector-contrib,open-telemetry/opentelemetry-collector,open-telemetry/opentelemetry-collector