use old keycloakusers apiGroup

src/main/java/de/ozgcloud/operator/keycloak/KeycloakUser.java

@@ -5,7 +5,7 @@ import io.fabric8.kubernetes.client.CustomResource;
 import io.fabric8.kubernetes.model.annotation.Group;
 import io.fabric8.kubernetes.model.annotation.Version;
 
-@Group("operator.ozgcloud.de")
+@Group("api.kop-stack.de") //("operator.ozgcloud.de")
 @Version("v1")
 public class KeycloakUser extends CustomResource<KeycloakUserSpec, KeycloakUserStatus> implements Namespaced {