Add backup step to upgrade

Depends-On: I3b51b7a957735873b0de098578e1b83c586f111a
Change-Id: I7901e11d4687e7932de4149c25b3cb705d49599f

service/files/backup.sh.j2

@@ -0,0 +1,6 @@
+#!/bin/bash -ex
+set -o pipefail
+BACKUP_FILE="/var/ccp/backup/neutron/backup-$(date "+%Y%m%d%H%M%S").sql"
+mysqldump -h {{ address(service.database)  }} \
+    -u {{ neutron.db.username }} -p{{ neutron.db.password }} \
+    --single-transaction {{ neutron.db.name }} > "${BACKUP_FILE}"

service/upgrade/default.yaml

@@ -1,7 +1,17 @@
 upgrade:
   name: upgrade-neutron
-  image: neutron-server
+  image: neutron-base
   steps:
+    - name: backup
+      command: /opt/ccp/bin/backup.sh
+      files:
+        - backup-sh
+      volumes:
+        - name: backup-dir
+          path: /var/ccp/backup/neutron
+          type: host
+          readOnly: false
+      topology_key: backup
     - name: expand
       command: neutron-db-manage upgrade --expand
       files:
@@ -30,3 +40,7 @@ files:
     path: /etc/neutron/neutron.conf
     content: neutron.conf.j2
     perm: "0600"
+  backup-sh:
+    path: /opt/ccp/bin/backup.sh
+    content: backup.sh.j2
+    perm: "500"