ppc64le: Add images job to tripleo-upstream project
ppc64le: Add images job to tripleo-upstream project

Adds the job template to the same project as the containers build.
Rename the project to be more generic so the jobs can use the
same configuration.

Change-Id: Ifbb6f5bd2ac9e3039da3f4cedbb4f05d6e8a3ca6

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