following https://github.com/openshift/oadp-operator/blob/54aad556507aee70f3c7647afe24021d458d1b23/docs/developer/unsupported_server_args.md
Create configmaps
my-config-velero-server.yml
apiVersion: v1
kind: ConfigMap
metadata:
name: my-config-velero-server
namespace: openshift-adp