Add unique column constraints to db

Unique constraints are not being set on the database but they are
defined in the schema. This db upgrade adds the unique constraints.

Change-Id: I0dd1c2190bf7b68e1e0c8c71fbb123d2c82cc0d3
Closes-Bug: 1451761

magnum/db/sqlalchemy/alembic/versions/3b6c4c42adb4_add_unique_constraints.py

@@ -0,0 +1,40 @@
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+"""Add unique constraints
+
+Revision ID: 3b6c4c42adb4
+Revises: 592131657ca1
+Create Date: 2015-05-05 09:45:44.657047
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = '3b6c4c42adb4'
+down_revision = '592131657ca1'
+
+from alembic import op
+
+
+def upgrade():
+    op.create_unique_constraint("uniq_bay0uuid", "bay", ["uuid"])
+    op.create_unique_constraint("uniq_baylock0bay_uuid", "baylock",
+                                ["bay_uuid"])
+    op.create_unique_constraint("uniq_baymodel0uuid", "baymodel", ["uuid"])
+    op.create_unique_constraint("uniq_container0uuid", "container", ["uuid"])
+    op.create_unique_constraint("uniq_node0uuid", "node", ["uuid"])
+    op.create_unique_constraint("uniq_node0ironic_node_id", "node",
+                                ["ironic_node_id"])
+    op.create_unique_constraint("uniq_pod0uuid", "pod", ["uuid"])
+    op.create_unique_constraint("uniq_service0uuid", "service", ["uuid"])
+    op.create_unique_constraint("uniq_replicationcontroller0uuid",
+                                "replicationcontroller", ["uuid"])