Running against pre existent k8s manifests

[joaogbcravo]

Hi!

With a little "hack" I manage to run helm-test against k8s manifests instead an Helm chart, simulating that the k8s manifests are templates to be generated. However, now I hit on a manifest that have double brackets (but not a variable to be replaced) and Helm-test complains because expects to replace it.

So.. I don't want to hack it anymore, expecting to do it in the right way. And for me the right way would be having a parallel module "manifests" with a function "go" (similar with helm module) that reads, parses and tests the files on some given directory. Do you think this is out of scope of this project? If you like the idea I will create the PR...