Handle v2 reply for CreateSliver.
Handle v2 reply for CreateSliver.

plantigrade/geni-tools,tcmitchell/geni-tools,plantigrade/geni-tools,GENI-NSF/gram,ahelsing/geni-tools,tcmitchell/geni-tools,GENI-NSF/gram,GENI-NSF/gram,ahelsing/geni-tools