Adds 5 backport db migration place holder for newton

Db migration version from 74 to 78 are made as place
holder of db backporting for stable/newton.

Closes-bug:#1633977

Change-Id: I353a7452d724c1cb1ae2892dc561b3c2afe8b7cf

heat/db/sqlalchemy/migrate_repo/versions/074_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 Newton backports.
+# Do not use this number for new Ocata work, which starts after
+# all the placeholders.
+
+
+def upgrade(migrate_engine):
+    pass

heat/db/sqlalchemy/migrate_repo/versions/075_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 Newton backports.
+# Do not use this number for new Ocata work, which starts after
+# all the placeholders.
+
+
+def upgrade(migrate_engine):
+    pass

heat/db/sqlalchemy/migrate_repo/versions/076_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 Newton backports.
+# Do not use this number for new Ocata work, which starts after
+# all the placeholders.
+
+
+def upgrade(migrate_engine):
+    pass

heat/db/sqlalchemy/migrate_repo/versions/077_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 Newton backports.
+# Do not use this number for new Ocata work, which starts after
+# all the placeholders.
+
+
+def upgrade(migrate_engine):
+    pass

heat/db/sqlalchemy/migrate_repo/versions/078_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 Newton backports.
+# Do not use this number for new Ocata work, which starts after
+# all the placeholders.
+
+
+def upgrade(migrate_engine):
+    pass