Allow reflective access to Jaeger DTO classes' fields

The Jaeger client uses GSON to unmarshall JSON messages containing
sampling configuration to Java objects. GSON uses reflection on the DTO
object to determine fields that match the properties in the JSON object.

by default, the ReflectiveClassBuildItem does not allow access to a
class' fields via reflection. This PR therefore explicitly enables it.

This should (finally) fix quarkusio#10402

Signed-off-by: Kai Hudalla <[email protected]>
(cherry picked from commit d6bffc0)

extensions/jaeger/deployment/src/main/java/io/quarkus/jaeger/deployment/JaegerProcessor.java

@@ -62,6 +62,8 @@ public ReflectiveClassBuildItem reflectiveClasses() {
                         "io.jaegertracing.internal.samplers.http.ProbabilisticSamplingStrategy",
                         "io.jaegertracing.internal.samplers.http.RateLimitingSamplingStrategy",
                         "io.jaegertracing.internal.samplers.http.SamplingStrategyResponse")
-                .finalFieldsWritable(true).build();
+                .fields(true)
+                .finalFieldsWritable(true)
+                .build();
     }
 }