---

features:
  - Add ODL upgradability
    Steps of upgrade are as follows
    1. Block OVS instances to connect to ODL done in upgrade_tasks
    2. Set ODL upgrade flag to True done in upgrade_tasks
    3. Start ODL. This is done via docker config step 1
    4. Start Neutron re-sync triggered by starting of Neutron server
       container in step 4 of docker config
    5. Delete OVS groups and ports
    6. Stop OVS
    7. Unblock OVS ports
    8. Start OVS
    9. Unset ODL upgrade flag
    Steps 5 to 9 are done in post_upgrade_steps