Description of problem:
Keepalived handover doesn't work while instances are on the same chassis.
Steps to Reproduce:
1. Spawn devstack with https://review.opendev.org/#/c/676223/
2. Spawn 2 instances, follow procedure described here: https://blog.codecentric.de/en/2016/11/highly-available-vips-openstack-vms-vrrp/
3. Try to move VIP address to second VM
4. Check that ping stopped working on VIP FIP
Handover doesn't work. VIP FIP is not reachable
The fix is available in downstream - ovn2.11-2.11.1-13.el7fdn.
The fix should be available in next FDP 20.A