fix: set ConfigurationService when registering

Author: metacosm

operator-framework-core/src/main/java/io/javaoperatorsdk/operator/api/config/AbstractConfigurationService.java

@@ -35,6 +35,7 @@ private <R extends CustomResource> void put(
       }
     }
     configurations.put(name, config);
+    config.setConfigurationService(this);
   }
 
   protected void throwExceptionOnNameCollision(

operator-framework-core/src/main/java/io/javaoperatorsdk/operator/api/config/ControllerConfigurationOverrider.java

@@ -70,6 +70,11 @@ public ControllerConfiguration<R> build() {
       public Class<R> getCustomResourceClass() {
         return original.getCustomResourceClass();
       }
+
+      @Override
+      public ConfigurationService getConfigurationService() {
+        return original.getConfigurationService();
+      }
     };
   }