fix rerank service test

Author: brendan-jugan-elastic

x-pack/plugin/inference/qa/inference-service-tests/src/javaRestTest/java/org/elasticsearch/xpack/inference/InferenceGetServicesIT.java

@@ -111,7 +111,7 @@ public void testGetServicesWithTextEmbeddingTaskType() throws IOException {
 
     public void testGetServicesWithRerankTaskType() throws IOException {
         List<Object> services = getServices(TaskType.RERANK);
-        assertThat(services.size(), equalTo(9));
+        assertThat(services.size(), equalTo(10));
 
         var providers = providers(services);
 
@@ -127,7 +127,8 @@ public void testGetServicesWithRerankTaskType() throws IOException {
                     "jinaai",
                     "test_reranking_service",
                     "voyageai",
-                    "hugging_face"
+                    "hugging_face",
+                    "elastic"
                 ).toArray()
             )
         );