fix for BUG-709 - mixed up flow cookie and connection cookie

- flow cookie [64b] is present at receivedPacket (to distinguish responsible flow)
- connection cookie [32b] is present at receivedPacket and is expected
  to be copied into corresponding transmitPacketInput (to distinguish auxiliary connection)
- fixed sal-compatibility, l2switch/implementation, sal-binding-it

Change-Id: I331aa3a0f582219a1c604e21466c7a893ee4ed67
Signed-off-by: Michal Rehak <mirehak@cisco.com>
Merge "fix for BUG-709 - mixed up flow cookie and connection cookie"