Adding to list of generated-members to fix pylint errors (apache#4632)

* Adding to list of generated-members

* Updating to ignore-classes sqlalchemy scoped_session

.pylintrc

@@ -282,7 +282,7 @@ ignored-modules=numpy,pandas,alembic.op,sqlalchemy,alembic.context,flask_appbuil
 # List of class names for which member attributes should not be checked (useful
 # for classes with dynamically set attributes). This supports the use of
 # qualified names.
-ignored-classes=optparse.Values,thread._local,_thread._local
+ignored-classes=optparse.Values,thread._local,_thread._local,sqlalchemy.orm.scoping.scoped_session
 
 # List of members which are set dynamically and missed by pylint inference
 # system, and so shouldn't trigger E1101 when accessed. Python regular