fix a few golint errors
fix a few golint errors

Signed-off-by: Victor Vieux <5e30c7222a5138067ad5bff2f2b96878cc9b735a@gmail.com>

e11137/cli,cpuguy83/cli,dnephin/cli,e11137/cli,riyazdf/cli,docker/cli,redpanda/cli,allencloud/cli,Zebrilee/cli,dnephin/cli,ashfall/cli,redpanda/cli,ashfall/cli,thaJeztah/cli,riyazdf/cli,docker/cli,allencloud/cli,Zebrilee/cli,cpuguy83/cli,thaJeztah/cli