fix: add support for label selector

Author: metacosm

operator-framework/src/main/java/io/javaoperatorsdk/operator/config/runtime/AnnotationConfiguration.java

@@ -50,6 +50,11 @@ public Set<String> getNamespaces() {
     return Set.of(annotation.map(Controller::namespaces).orElse(new String[] {}));
   }
 
+  @Override
+  public String getLabelSelector() {
+    return annotation.map(Controller::labelSelector).orElse("");
+  }
+
   @Override
   public ConfigurationService getConfigurationService() {
     return service;