Adding the nova.exeption import to fix the tree

diff --git a/heat/db/sqlalchemy/session.py b/heat/db/sqlalchemy/session.py
index 572271117da0eba08abba308b11899b63cc46c47..8e91c242c06433343d7a3c5d0ece36fb5554079d 100644 (file)
--- a/heat/db/sqlalchemy/session.py
+++ b/heat/db/sqlalchemy/session.py
@@ -13,7 +13,7 @@
 #    under the License.
 
 """Session Handling for SQLAlchemy backend."""
-
+import nova.exception
 import sqlalchemy.interfaces
 import sqlalchemy.orm
 from sqlalchemy.exc import DisconnectionError