Comment 7 for bug 1509046

At least what I can say is that it is not a good idea to have two different schemes for scheduling: DHCP and L3.
L3 scheduling needs to take into account L3-HA. If we can simplify the code base well, it is good to go with low priority.

Note that AZ feature was added in Mitaka. It may be needed to change the base scheduler if necessary.