avf: flow support enhancement
avf: flow support enhancement

This patch enables ip4, ip6, ip6-n-tuple, l2tpv3 esp ah flows in avf plugin

Type: improvement

Signed-off-by: Chenmin Sun <71b642265be4af49e0dfaebb3693a304dd3a73e9@intel.com>
Change-Id: I92c6d4217a6cce4085ee83e8beb4b037c8d7da5f

FDio/vpp,chrisy/vpp,chrisy/vpp,chrisy/vpp,chrisy/vpp,chrisy/vpp,FDio/vpp,FDio/vpp,FDio/vpp,FDio/vpp,chrisy/vpp,FDio/vpp,FDio/vpp,FDio/vpp,chrisy/vpp,chrisy/vpp