8ec8a01 Rename 'koji_arches' to 'arches' in OpenShift config

Authored and Committed by csomh 5 years ago
    Rename 'koji_arches' to 'arches' in OpenShift config
    
    'koji_arches' was renamed to 'arches' in a previous commit. Update the
    configuration in the OpenShift template accordingly.
    
    Signed-off-by: Hunor Csomortáni <csomh@redhat.com>