NGSTN-1241 Farster coldstart with HTTP/protobuf exporters #55
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Use OTLP http/proto instead of OTLP gRPC exporters. This way we avoid having to package (layer size) and initialise (invoke duraiton) gRPC librarary. http library is built-in and initialised anyway. We still pay the cost of the protobuf library.
This change also fixes a warning log about gRPC instrumentation. And it required suppressing HTTP instrumentation or else we would generate extra spans and metrics.