update indigo
update indigo

* submodules/indigo b86b630...4ce611c (1):
  > Merge into master from pull request #95: implement bsn_flow_checksum extension (https://github.com/floodlight/indigo/pull/95)

vezril/ivs,floodlight/ivs,floodlight/ivs,floodlight/ivs,vezril/ivs,vezril/ivs