Only build ha-guide-draft once
Only build ha-guide-draft once

We've built the guide twice, once with draft, once without. Build it for
/draft/ location only.

Change-Id: Id2b8c2988660e0dcb0132fa299ee568a3cf1fa92

openstack/openstack-manuals,openstack/openstack-manuals,openstack/openstack-manuals,openstack/openstack-manuals