Move vector search query test methods into separate class

Maximum number of public method is reached, hence,
move vector serach query test methods into
separate class.

Signed-off-by: Vijayan Balasubramanian <[email protected]>

tests/worker_coordinator/runner_test.py

@@ -2207,6 +2207,8 @@ async def test_search_pipeline_using_request_params(self, opensearch):
         )
         opensearch.clear_scroll.assert_not_called()
 
+
+class VectorSearchQueryRunnerTests(TestCase):
     @mock.patch("opensearchpy.OpenSearch")
     @run_async
     async def test_query_vector_search_with_perfect_recall(self, opensearch):
@@ -2338,7 +2340,6 @@ async def test_query_vector_search_with_no_results(self, opensearch):
             headers={"Accept-Encoding": "identity"}
         )
 
-
     @mock.patch("opensearchpy.OpenSearch")
     @run_async
     async def test_query_vector_search_with_imperfect_recall(self, opensearch):
@@ -2559,7 +2560,6 @@ async def test_query_vector_search_with_zero_recall_1(self, opensearch):
             headers={"Accept-Encoding": "identity"}
         )
 
-
     @mock.patch("opensearchpy.OpenSearch")
     @run_async
     async def test_query_vector_search_with_custom_id_field(self, opensearch):
@@ -2736,6 +2736,7 @@ async def test_query_vector_search_with_custom_id_field_inside_source(self, open
             headers={"Accept-Encoding": "identity"}
         )
 
+
 class CreateIngestPipelineRunnerTests(TestCase):
     @mock.patch("opensearchpy.OpenSearch")
     @run_async