Adding test for universe bounding box.
Adding test for universe bounding box.

shikhar413/openmc,shikhar413/openmc,liangjg/openmc,amandalund/openmc,paulromano/openmc,paulromano/openmc,shikhar413/openmc,walshjon/openmc,shikhar413/openmc,walshjon/openmc,liangjg/openmc,amandalund/openmc,paulromano/openmc,mit-crpg/openmc,liangjg/openmc,mit-crpg/openmc,liangjg/openmc,smharper/openmc,smharper/openmc,paulromano/openmc,walshjon/openmc,amandalund/openmc,smharper/openmc,walshjon/openmc,mit-crpg/openmc,amandalund/openmc,mit-crpg/openmc,smharper/openmc