RemoteControlledSampler fails with "No strategy present in response. Not updating sampler." in native mode
**Describe the bug**

When using Jaeger tracing by adding: `io.quarkus:quarkus-jaeger`, tracing seems to work, but a periodic error message is in the log, when using native mode.

I assume that updating the strategy is broken as well.

**Expected behavior**

Same as JVM mode: No error message. Update works.

**Actual behavior**

~~~
2020-07-01T11:31:05.711Z ERROR [RemoteControlledSampler] No strategy present in response. Not updating sampler.
~~~

**To Reproduce**
Steps to reproduce the behavior:
1. Enable tracing
2. Check the logs
3. 

**Environment (please complete the following information):**
 - Output of `uname -a` or `ver`: 
 - Output of `java -version`: 
 - GraalVM version (if different from Java): 
 - Quarkus version or git rev: 
 - Build tool (ie. output of `mvnw --version` or `gradlew --version`): 

diff --git a/extensions/jaeger/deployment/src/main/java/io/quarkus/jaeger/deployment/JaegerProcessor.java b/extensions/jaeger/deployment/src/main/java/io/quarkus/jaeger/deployment/JaegerProcessor.java
index 06e9e0308f6..a45fd1c9dea 100644
--- a/extensions/jaeger/deployment/src/main/java/io/quarkus/jaeger/deployment/JaegerProcessor.java
+++ b/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();
     }
 }
['extensions/jaeger/deployment/src/main/java/io/quarkus/jaeger/deployment/JaegerProcessor.java']