Merge remote-tracking branch 'origin/develop_integration_2018_w02' into develop
Summary of changes: - integration of Cisco work on nFAPI. See commits 7757b9e7 and 922b5b59 for details. - support Ubuntu 17.04 and 17.10 - bugfix: DCI padding bits This bug made the system non-working because the DCIs for SIBs were wrong. See commit c5ca2bd8 for details. - fix issue 281: IQ record/playback explicit filename segv.