Open Ussuri DB branch

Change-Id: I345b960e97b1a95a361375cc9d5c3fc2e4836806

neutron/db/migration/__init__.py

@@ -32,6 +32,7 @@ QUEENS = 'queens'
 ROCKY = 'rocky'
 STEIN = 'stein'
 TRAIN = 'train'
+USSURI = 'ussuri'
 
 NEUTRON_MILESTONES = [
     # earlier milestones were not tagged
@@ -43,6 +44,7 @@ NEUTRON_MILESTONES = [
     QUEENS,
     ROCKY,
     STEIN,
+    TRAIN,
     # Do not add the milestone until the end of the release
 ]
 

neutron/db/migration/alembic_migrations/versions/train/expand/c613d0b82681_subnet_force_network_id.py

@@ -16,6 +16,8 @@
 from alembic import op
 import sqlalchemy as sa
 
+from neutron.db import migration
+
 
 """subnet force network id
 
@@ -29,6 +31,9 @@ Create Date: 2019-08-19 11:15:14.443244
 revision = 'c613d0b82681'
 down_revision = '63fd95af7dcd'
 
+# milestone identifier, used by neutron-db-manage
+neutron_milestone = [migration.TRAIN]
+
 
 def upgrade():
     op.alter_column('subnets', 'network_id', nullable=False,

neutron/db/migration/cli.py

@@ -38,7 +38,7 @@ HEADS_FILENAME = 'HEADS'
 CONTRACT_HEAD_FILENAME = 'CONTRACT_HEAD'
 EXPAND_HEAD_FILENAME = 'EXPAND_HEAD'
 
-CURRENT_RELEASE = migration.TRAIN
+CURRENT_RELEASE = migration.USSURI
 RELEASES = (
     migration.LIBERTY,
     migration.MITAKA,
@@ -49,6 +49,7 @@ RELEASES = (
     migration.ROCKY,
     migration.STEIN,
     migration.TRAIN,
+    migration.USSURI,
 )
 
 EXPAND_BRANCH = 'expand'