Merge into master from pull request #148:
update pyloxi to floodlight/loxigen-artifacts @ 8ee5d1d264dd0d6bb719a19fc8ff2c8867ed3e31 (https://github.com/floodlight/oftest/pull/148)
update pyloxi to floodlight/loxigen-artifacts @ b44eb26cc919f8bd61d0da059163a1a7dce088de

Pulls in OF 1.4.