examples/ip_pipeline: add KNI port example
examples/ip_pipeline: add KNI port example

Add example to illustrate the pipeline functioning with KNI
interface.

Signed-off-by: Cristian Dumitrescu <25468b8a3698eeb3c368247f8635924bb4a1ce2c@intel.com>
Signed-off-by: Jasvinder Singh <97b766ecf460b59e2781d4fc0469065206870f5c@intel.com>
Signed-off-by: Kevin Laatz <961b59698dfa2327ef66e48c81ae3315f5733fd1@intel.com>

john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk,john-mcnamara-intel/dpdk