---
upgrade:
  - |
    The default TaskFlow engine is now set to 'parallel' instead of 'serial'.
    The parallel engine schedules tasks onto different threads to allow for
    running non-dependent tasks simultaneously. This has the benefit of
    accelerating the execution of some Octavia Amphora flows such as
    provisioning of active-standby amphora loadbalancers. Operators can revert
    to previously default 'serial' engine type by setting the configuration
    option [task_flow]/engine = serial