Adds 5 backport db migration place holder for liberty

Db version from 66 to 70 are made as place holder of db
backporting for liberty.

Change-Id: I8187f9ec3cf53a9e2eb93c3c1f9e96935d309892

heat/db/sqlalchemy/migrate_repo/versions/066_placeholder.py

@@ -0,0 +1,20 @@
+#
+#    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.
+
+# This is a placeholder for Liberty backports.
+# Do not use this number for new Mitaka work.  New Mitaka work starts after
+# all the placeholders.
+
+
+def upgrade(migrate_engine):
+    pass

heat/db/sqlalchemy/migrate_repo/versions/067_placeholder.py

@@ -0,0 +1,20 @@
+#
+#    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.
+
+# This is a placeholder for Liberty backports.
+# Do not use this number for new Mitaka work.  New Mitaka work starts after
+# all the placeholders.
+
+
+def upgrade(migrate_engine):
+    pass

heat/db/sqlalchemy/migrate_repo/versions/068_placeholder.py

@@ -0,0 +1,20 @@
+#
+#    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.
+
+# This is a placeholder for Liberty backports.
+# Do not use this number for new Mitaka work.  New Mitaka work starts after
+# all the placeholders.
+
+
+def upgrade(migrate_engine):
+    pass

heat/db/sqlalchemy/migrate_repo/versions/069_placeholder.py

@@ -0,0 +1,20 @@
+#
+#    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.
+
+# This is a placeholder for Liberty backports.
+# Do not use this number for new Mitaka work.  New Mitaka work starts after
+# all the placeholders.
+
+
+def upgrade(migrate_engine):
+    pass

heat/db/sqlalchemy/migrate_repo/versions/070_placeholder.py

@@ -0,0 +1,20 @@
+#
+#    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.
+
+# This is a placeholder for Liberty backports.
+# Do not use this number for new Mitaka work.  New Mitaka work starts after
+# all the placeholders.
+
+
+def upgrade(migrate_engine):
+    pass