Feature to modify virtual_router_id in keepalived

we want to control the router IDs generated for keepalived because our OpenShift clusters are hosted on a L2 VXLAN fabric with BGP-EVPN underneath and we have to make sure the MAC addresses for the VRRP instances are unique fabric-wide. How do we override the virtual_router_id for Ingress and API on a per-cluster basis? 

> ./oc rsh keepalived-ci-ln-hf9b9ht-c1627-z2d4k-master-0Defaulted container "keepalived" out of: keepalived, keepalived-monitor, render-config-keepalived (init)sh-4.4# sh-4.4# 
sh-4.4# cat /etc/keepalived/keepalived.conf | grep -i virtual_router_id -A5 -B5

vrrp_instance ci-ln-hf9b9ht-c1627_API_0 {    state BACKUP    interface br-ex    virtual_router_id 82    priority 40    advert_int 1        unicast_src_ip 10.38.x.x    unicast_peer {--

vrrp_instance ci-ln-hf9b9ht-c1627_INGRESS_0 {    state BACKUP    interface br-ex    virtual_router_id 113    priority 20    advert_int 1        unicast_src_ip 10.38.x.x    unicast_peer {