Merge into master from pull request #149:
update pyloxi to floodlight/loxigen-artifacts @ b44eb26cc919f8bd61d0da059163a1a7dce088de (https://github.com/floodlight/oftest/pull/149)
update pyloxi to floodlight/loxigen-artifacts @ d8618ceae4c7b791eeb068ab18df3ebdea073bf2