Refactor git_integration.py to follow PEP8 standards

Author: smlindauer

src/sasctl/pzmm/__init__.py

@@ -1,7 +1,7 @@
 # Copyright (c) 2021, SAS Institute Inc., Cary, NC, USA.  All Rights Reserved.
 # SPDX-License-Identifier: Apache-2.0
 
-from .gitIntegration import GitIntegrate
+from .git_integration import GitIntegrate
 from .import_model import ImportModel
 from .mlflow_model import MLFlowModel
 from .model_parameters import ModelParameters