Using hieradata_override to configure stacks to use different router_id for VRRP

Issue

• I need to figure out how to configure stacks to use different router_id for vrrp.
• We have a couple of OSP stacks that share some networking. Both directors are using the same router_id (41,42) in /etc/keepalived/keepalived.conf.

• /var/log/message is logging constant errors:

  Jan 1 03:21:15 undercloud Keepalived_vrrp[22110]: (42): ip address associated with VRID 42 not present in MASTER advert : 10.0.0.2
  Jan 1 03:21:15 undercloud Keepalived_vrrp[22110]: bogus VRRP packet received on br-ctlplane !!!
  Jan 1 03:21:15 undercloud Keepalived_vrrp[22110]: VRRP_Instance(42) Dropping received VRRP packet...
  Jan 1 03:21:15 undercloud Keepalived_vrrp[22110]: (42): received an invalid ip number count 0, expected 1!
  Jan 1 03:21:15 undercloud Keepalived_vrrp[22110]: bogus VRRP packet received on br-ctlplane !!!
  Jan 1 03:21:15 undercloud Keepalived_vrrp[22110]: VRRP_Instance(42) Dropping received VRRP packet...
  Jan 1 03:21:16 undercloud Keepalived_vrrp[22110]: (41): ip address associated with VRID 41 not present in MASTER advert : 10.0.0.3
  Jan 1 03:21:16 undercloud Keepalived_vrrp[22110]: bogus VRRP packet received on br-ctlplane !!!
  Jan 1 03:21:16 undercloud Keepalived_vrrp[22110]: VRRP_Instance(41) Dropping received VRRP packet...
  Jan 1 03:21:16 undercloud Keepalived_vrrp[22110]: (42): received an invalid ip number count 0, expected 1!
  Jan 1 03:21:16 undercloud Keepalived_vrrp[22110]: bogus VRRP packet received on br-ctlplane !!!
  Jan 1 03:21:16 undercloud Keepalived_vrrp[22110]: VRRP_Instance(42) Dropping received VRRP packet...