Fix OVN deployment for OSP 14
Fix OVN deployment for OSP 14

Path to OVN environment file changed and now in 'services' directory
instead of 'services-docker'.

Change-Id: If97851d61718dd882cb96ceab76f905bf07943a6

redhat-openstack/infrared,redhat-openstack/infrared,redhat-openstack/infrared