Use upstream Openstack namespace for tripleo-upgrade plugin
Use upstream Openstack namespace for tripleo-upgrade plugin

The tripleo-upgrade repo has been migrated to the openstack name
space and any future changes will be committed to that repo. This
change points the Infrared plugin to the new location.

Change-Id: I9e53ed6f1eb8198daa38189f179729f7361a2f01

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