Add publish jobs for StarlingX api-ref and releasenotes
Add publish jobs for StarlingX api-ref and releasenotes

* Add publish-stx-api-ref to publish to /api-ref/<project-name>
* Add publish-stx-releasenotes to publish to /releasenotes/<project-name>

Change-Id: I3a7cc67e5f8946c16c2326697c4005b96a9389d4
Signed-off-by: Dean Troyer <8b9d4b97f386f6f54679ab5c0c082ebdb224d70a@gmail.com>

openstack-infra/project-config,openstack-infra/project-config