netctl: fix golint travis issue
netctl: fix golint travis issue

Signed-off-by: Nikos Bregiannis <c71c359c566c1720a60260b7e727422ad3649f68@gmail.com>

brecode/vpp,brecode/vpp,milanlenco/vpp-1,rastislavszabo/vpp,rastislavszabo/vpp,rastislavszabo/vpp,brecode/vpp,milanlenco/vpp-1,rastislavszabo/vpp,rastislavszabo/vpp,rastislavszabo/vpp,milanlenco/vpp-1,rastislavszabo/vpp,milanlenco/vpp-1,milanlenco/vpp-1,brecode/vpp,brecode/vpp