Initialize alembic branches for vmware-nsx repo

Add alembic migration branch for vmware-nsx repo. Scripts for new
tables owned by vmware-nsx must now be added here.

Partially-Implements: blueprint online-schema-migrations

Change-Id: Ia3b805bb7a4583c96c61f322a45a91db0d67cc9c

setup.cfg

@@ -24,6 +24,8 @@ packages =
 [entry_points]
 console_scripts =
     neutron-check-nsx-config = vmware_nsx.neutron.plugins.vmware.check_nsx_config:main
+neutron.db.alembic_migrations =
+    vmware-nsx = vmware_nsx.neutron.db.migration:alembic_migrations
 neutron.service_plugins =
     vmware_nsx_l2gw = vmware_nsx.neutron.services.l2gateway.plugin:NsxL2GatewayPlugin
 vmware_nsx.neutron.nsxv.router_type_drivers =

vmware_nsx/neutron/db/migration/alembic_migrations/script.py.mako

@@ -0,0 +1,36 @@
+# Copyright ${create_date.year} VMware, Inc.
+#
+#    Licensed under the Apache License, Version 2.0 (the "License"); you may
+#    not use this file except in compliance with the License. You may obtain
+#    a copy of the License at
+#
+#         http://www.apache.org/licenses/LICENSE-2.0
+#
+#    Unless required by applicable law or agreed to in writing, software
+#    distributed under the License is distributed on an "AS IS" BASIS, WITHOUT
+#    WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied. See the
+#    License for the specific language governing permissions and limitations
+#    under the License.
+
+"""${message}
+
+Revision ID: ${up_revision}
+Revises: ${down_revision}
+Create Date: ${create_date}
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = ${repr(up_revision)}
+down_revision = ${repr(down_revision)}
+% if branch_labels:
+branch_labels = ${repr(branch_labels)}
+%endif
+
+from alembic import op
+import sqlalchemy as sa
+${imports if imports else ""}
+
+
+def upgrade():
+    ${upgrades if upgrades else "pass"}

vmware_nsx/neutron/db/migration/alembic_migrations/versions/HEADS

@@ -0,0 +1,3 @@
+393bf843b96
+53a3254aa95e
+kilo

vmware_nsx/neutron/db/migration/alembic_migrations/versions/liberty/contract/393bf843b96_initial_liberty_no_op_contract_script.py

@@ -0,0 +1,32 @@
+# Copyright 2015 VMware, Inc.
+#
+#    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.
+#
+
+"""Initial Liberty no-op contract script.
+
+Revision ID: 393bf843b96
+Revises: None
+Create Date: 2015-08-13 07:26:21.891165
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = '393bf843b96'
+down_revision = None
+branch_labels = ('liberty_contract',)
+depends_on = ('kilo',)
+
+
+def upgrade():
+    pass

vmware_nsx/neutron/db/migration/alembic_migrations/versions/liberty/expand/53a3254aa95e_initial_liberty_no_op_expand_script.py

@@ -0,0 +1,32 @@
+# Copyright 2015 VMware, Inc.
+#
+#    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.
+#
+
+"""Initial Liberty no-op expand script.
+
+Revision ID: 53a3254aa95e
+Revises: None
+Create Date: 2015-08-13 06:34:29.842396
+
+"""
+
+# revision identifiers, used by Alembic.
+revision = '53a3254aa95e'
+down_revision = None
+branch_labels = ('liberty_expand',)
+depends_on = ('kilo',)
+
+
+def upgrade():
+    pass