Fix decap-next for ethernet format in nsh-vxlan-gpe
Fix decap-next for ethernet format in nsh-vxlan-gpe

Change-Id: I9f5efef4c2b821e4c7d76ed6e2c4f52c2495e512
Signed-off-by: Hongjun Ni <e6547d24d7149371d2bb4b8f7cc3ef66745c46d6@intel.com>

GabrielGanne/vpp-flowtable,milanlenco/vpp,FDio/vpp,FDio/vpp,muharif/vpp,milanlenco/vpp,GabrielGanne/vpp-flowtable,muharif/vpp,muharif/vpp,GabrielGanne/vpp-flowtable,chrisy/vpp,chrisy/vpp,muharif/vpp,milanlenco/vpp,GabrielGanne/vpp-flowtable,vpp-dev/vpp,vpp-dev/vpp,FDio/vpp,chrisy/vpp,GabrielGanne/vpp-flowtable,vpp-dev/vpp,vpp-dev/vpp,vpp-dev/vpp,FDio/vpp,FDio/vpp,FDio/vpp,chrisy/vpp,chrisy/vpp,muharif/vpp,chrisy/vpp,FDio/vpp,muharif/vpp,FDio/vpp,chrisy/vpp,milanlenco/vpp,chrisy/vpp,GabrielGanne/vpp-flowtable,milanlenco/vpp,vpp-dev/vpp,milanlenco/vpp,vpp-dev/vpp