1. give each HA failover case an independent vrrp_id
2. give each HA port an independent IP address, so the
interface IPs for router HA ports will be:
169.254.192.100 and 169.254.192.101
169.254.192.102 and 169.254.192.103
169.254.192.104 and 169.254.192.105
169.254.192.106 and 169.254.192.107
VIP of each case will be:
169.254.0.10/24
169.254.0.11/24
169.254.0.12/24
169.254.0.13/24
169.254.0.14/24
Conflicts:
neutron/tests/common/l3_test_common.py
Closes-Bug: #1819160
Change-Id: I1216d96af40449ec16a852cc1f6c4f15c85f4546
(cherry picked from commit c69a87405a)
(cherry picked from commit 2c5957f56d)
(cherry picked from commit c50bdf2329)