add missing libs

Author: Matt Sokoloff

tests/integration/conftest.py

@@ -14,6 +14,10 @@
 
 from labelbox import Client, LabelingFrontend
 from labelbox.orm.query import results_query_part
+from labelbox.schema.invite import Invite
+from labelbox.orm.db_object import DbObject
+from labelbox.orm.model import Entity
+from labelbox.orm import query
 from labelbox.pagination import PaginatedCollection
 from labelbox.schema.invite import Invite
 from labelbox.schema.user import User