Quarkus example: Use CDI instead of ServiceLoader for the provider.

Change-Id: Ibbb012ea3fe9e32b8bc533724732885b57f87c88
diff --git a/examples/quarkus/src/main/java/eu/mulk/quarkus/googlecloud/jsonlogging/example/RandomNumberParameterProvider.java b/examples/quarkus/src/main/java/eu/mulk/quarkus/googlecloud/jsonlogging/example/RandomNumberParameterProvider.java
index 7e4158c..93975ae 100644
--- a/examples/quarkus/src/main/java/eu/mulk/quarkus/googlecloud/jsonlogging/example/RandomNumberParameterProvider.java
+++ b/examples/quarkus/src/main/java/eu/mulk/quarkus/googlecloud/jsonlogging/example/RandomNumberParameterProvider.java
@@ -3,8 +3,12 @@
 import eu.mulk.quarkus.googlecloud.jsonlogging.KeyValueParameter;
 import eu.mulk.quarkus.googlecloud.jsonlogging.StructuredParameter;
 import eu.mulk.quarkus.googlecloud.jsonlogging.StructuredParameterProvider;
+import io.quarkus.arc.Unremovable;
 import java.util.concurrent.ThreadLocalRandom;
+import javax.inject.Singleton;
 
+@Singleton
+@Unremovable
 public class RandomNumberParameterProvider implements StructuredParameterProvider {
 
   @Override
diff --git a/examples/quarkus/src/main/resources/META-INF/services/eu.mulk.quarkus.googlecloud.jsonlogging.StructuredParameterProvider b/examples/quarkus/src/main/resources/META-INF/services/eu.mulk.quarkus.googlecloud.jsonlogging.StructuredParameterProvider
deleted file mode 100644
index c0017e6..0000000
--- a/examples/quarkus/src/main/resources/META-INF/services/eu.mulk.quarkus.googlecloud.jsonlogging.StructuredParameterProvider
+++ /dev/null
@@ -1 +0,0 @@
-eu.mulk.quarkus.googlecloud.jsonlogging.example.RandomNumberParameterProvider