core: mute opentelemetry warnings for logs and metrics

We do not create logs and metrics in the application so it's not
necessary to export them.
Note that it currently failed because we export to Jaeger that only
support traces.

Author: woshilapin

docker-compose.yml

@@ -49,8 +49,10 @@ services:
       CORE_EDITOAST_URL: "http://osrd-editoast"
       JAVA_TOOL_OPTIONS: "-javaagent:/app/opentelemetry-javaagent.jar"
       CORE_MONITOR_TYPE: "opentelemetry"
-      OTEL_EXPORTER_OTLP_PROTOCOL: "grpc"
-      OTEL_EXPORTER_OTLP_ENDPOINT: "http://jaeger:4317"
+      OTEL_EXPORTER_OTLP_TRACES_PROTOCOL: "grpc"
+      OTEL_EXPORTER_OTLP_TRACES_ENDPOINT: "http://jaeger:4317"
+      OTEL_METRICS_EXPORTER: "none"
+      OTEL_LOGS_EXPORTER: "none"
     healthcheck:
       test: ["CMD", "curl", "-f", "http://localhost:8080/health"]
       start_period: 4s