pkg/cli fails standard golint check

[gdearment]

Implementing a cli.App.ContextConfig function causes the implementing package to fail standard golint checks:

func initContext(_ cli.Context, ctx context.Context) context.Context {
...
}

fails with:

[golint]        main.go:41:1: context.Context should be the first parameter of a function

[nmiyake]

This is unfortunate, but fixing it would require a breaking change and would also be inconsistent with the rest of the cli functions, where the cli.Context is always the first argument.

We could do a major version bump that fixes this one function, but not sure that it's worth doing so given that we generally recommend folks to use the Cobra CLI going forward and the golint checks can be disabled/ignored using configuration.