Fix incorrect path in tripleo-upstream builder
Fix incorrect path in tripleo-upstream builder

The path specified in tripleo-upstream-builders.yml was incorrect.
This should fix it.

Change-Id: I88bdf298ab80cfcd3dac4cdc5a8f2d372e79bc6d

redhat-openstack/rdo-infra,redhat-openstack/rdo-infra,rdo-infra/ci-config,redhat-openstack/rdo-infra,rdo-infra/ci-config,rdo-infra/ci-config,redhat-openstack/rdo-infra,rdo-infra/ci-config