ignition-rendering6: use ogre 2.2 (#1574)
ignition-rendering6: use ogre 2.2 (#1574)

Signed-off-by: Ian Chen <625e93291925dc3a59f7fbe5c4b09e52fe9c5155@osrfoundation.org>
scpeters/homebrew-simulation,osrf/homebrew-simulation