test_join_streaming.py: reduce scope of test

Author: yumkam

ydb/tests/fq/generic/test_join_streaming.py

@@ -368,7 +368,7 @@ def test_simple(self, kikimr, fq_client: FederatedQueryClient, settings: Setting
     @pytest.mark.parametrize("mvp_external_ydb_endpoint", [{"endpoint": "tests-fq-generic-ydb:2136"}], indirect=True)
     @pytest.mark.parametrize("fq_client", [{"folder_id": "my_folder_slj"}], indirect=True)
     @pytest.mark.parametrize("partitions_count", [1, 3])
-    @pytest.mark.parametrize("streamlookup", [False, True])
+    @pytest.mark.parametrize("streamlookup", [False, True] if DEBUG else [True])
     @pytest.mark.parametrize("testcase", [*range(len(TESTCASES))])
     def test_streamlookup(
         self,