Update microprofile-config.properties

Author: ttelang

code/chapter09/payment/src/main/resources/META-INF/microprofile-config.properties

@@ -13,5 +13,8 @@ io.microprofile.tutorial.store.payment.service.PaymentService/processPayment/Ret
 # MicroProfile Telemetry Configuration
 otel.service.name=payment-service
 otel.sdk.disabled=false
-otel.metrics.exporter=none
-otel.logs.exporter=none
+otel.exporter.otlp.endpoint=http://localhost:4317
+otel.traces.exporter=otlp
+otel.metrics.exporter=otlp
+otel.logs.exporter=none
+otel.traces.sampler=parentbased_always_on