Add golangci-lint to make default, test, and units
Add golangci-lint to make default, test, and units

[#164837361]

Authored-by: Mike Kenyon <75e91291951205528b64b1cd362d7f89c6e1e1b5@pivotal.io>

cloudfoundry/cli,cloudfoundry/cli,cloudfoundry/cli