update loci to d31b118de44fc5b7e2fc0ad4ebfda04dbf98f9aa

 - Added bsn_time messages.
 - Added BSN LACP offload messages.
 - Added BSN PDU offload messages.
Merge into master from pull request #65:
update loci to d31b118de44fc5b7e2fc0ad4ebfda04dbf98f9aa (https://github.com/floodlight/indigo/pull/65)