Add new json to test Identity transformer

Author: stewarthe6

atomsci/ddm/test/integrative/balancing_trans/jsons/Identity_transformer.json

@@ -0,0 +1,24 @@
+{
+        "dataset_key" : "replaced",
+        "datastore" : "False",
+        "uncertainty": "False",
+        "splitter": "scaffold",
+        "split_valid_frac": "0.20",
+        "split_test_frac": "0.20",
+        "split_strategy": "train_valid_test",
+        "prediction_type": "classification",
+        "model_choice_score_type": "roc_auc",
+        "response_cols" : "active",
+        "id_col": "compound_id",
+        "smiles_col" : "rdkit_smiles",
+        "result_dir": "replaced",
+        "system": "LC",
+        "transformers": "True",
+        "model_type": "RF",
+        "featurizer": "computed_descriptors",
+        "descriptor_type": "mordred_filtered",
+        "feature_transform_type": "Identity",
+        "save_results": "False",
+        "verbose": "False",
+        "seed":"0"
+    }