Fix make generate-deploy

[2opremio]

It was failing with

$ make generate-deploy
go generate ./pkg/install
go: directory pkg/install is outside main module
make: *** [pkg/install/generated_templates.gogen.go] Error 1

Also, make sure that the dependencies of pkg/install/generate.go are included in go.mod (I didn't know that the tools build tag was treated specially).

Followup from #2779

[2opremio]

Also, make sure that the dependencies of pkg/install/generate.go are included in go.mod (I didn't know that the tools build tag was treated specially).

Followup from #2779

Maybe we should fix this instead by moving pkg/install/generate.go to pkg/cmd/something. I don't think that external users of pkg/install should need to pull vfsgen since it's only a compile-time dependency.

Now, maybe this is just a micro-optimization which isn't worth it?

Even better than that it would be for Go to figure out which of the dependencies from a given package are used and not enforce building and getting everything in their go.mod (that would have saved used from needing #2779 in the first place. Maybe this isn't possible for some fundamental reason I am missing?