Do not create objectmapper bean

Author: Alexander Idelberger

operator-framework-core/src/main/java/io/javaoperatorsdk/operator/Operator.java

@@ -28,9 +28,7 @@ public class Operator {
   private final ObjectMapper objectMapper;
 
   public Operator(KubernetesClient k8sClient, ConfigurationService configurationService) {
-    this.k8sClient = k8sClient;
-    this.configurationService = configurationService;
-    objectMapper = new ObjectMapper();
+    this(k8sClient, configurationService, new ObjectMapper());
   }
 
   public Operator(

operator-framework-spring-boot-starter/src/main/java/io/javaoperatorsdk/operator/springboot/starter/OperatorAutoConfiguration.java

@@ -57,19 +57,16 @@ public boolean checkCRDAndValidateLocalModel() {
     return configuration.getCheckCrdAndValidateLocalModel();
   }
 
-  @Bean
-  @ConditionalOnMissingBean
-  public ObjectMapper objectMapper() {
-    return new ObjectMapper().findAndRegisterModules();
-  }
-
   @Bean
   @ConditionalOnMissingBean(Operator.class)
   public Operator operator(
       KubernetesClient kubernetesClient,
       List<ResourceController<?>> resourceControllers,
-      ObjectMapper objectMapper) {
-    Operator operator = new Operator(kubernetesClient, this, objectMapper);
+      Optional<ObjectMapper> objectMapper) {
+    Operator operator =
+        objectMapper
+            .map(x -> new Operator(kubernetesClient, this, x))
+            .orElse(new Operator(kubernetesClient, this));
     resourceControllers.forEach(r -> operator.register(processController(r)));
     return operator;
   }