ci.o.o is not a valid scp site. Use valid site.

Gerritbot was setup to copy tarballs to ci.openstack.org via SCP;
however, ci.openstack.org is not a valid SCP site. Replace it with
173.203.107.207.

Change-Id: Ie9d49f8f510f598055c368246012f8351351b95c
Reviewed-on: https://review.openstack.org/11439
Approved: James E. Blair <corvus@inaugust.com>
Reviewed-by: James E. Blair <corvus@inaugust.com>
Tested-by: Jenkins

modules/openstack_project/files/jenkins_job_builder/config/projects.yaml

@@ -60,7 +60,7 @@
     github-org: openstack-ci
     node: precise
     doc-publisher-site: ci.openstack.org
-    tarball-publisher-site: ci.openstack.org
+    tarball-publisher-site: 173.203.107.207
     
     jobs:
       - gate-{name}-merge