1.6.9 - Not starting on System startup

I have HAProxy version 1.6.9 installed on 2 VM’s which are using keepalived to provide fault tolerance/redundancy.
everything functions correctly except I cannot bounce a node without having to manually start HAProxy.

I have read multiple places that there is a file /etc/default/haproxy, but this file does not exist on my installed using CentOS 7 (EPEL).

Can anyone assist with how I can get the service to start automatically?

Thank you!
Bill S.