Hey,

I think it would be awesome to have the option of pulling values files over http/s and git ssh.
Something like:

values:
- https://some-url.com/master/values.yaml.gotmpl
- git://git@github.com:org/repo.git//branch/path/to/values.yaml
- ./local-values.yaml

Motivation:

We're using helmfile for our GitOps deploy workflow. We have repository of basically just helmfiles that specify the state for each env (like the docker image value and helm chart version). A change to said repo triggers a deploy to the corresponding environment where our ci basically just has to run helmfile sync in the correct directory. However we like to store values that are coupled with the application in the application repository which is separate from the helmfile repository.

If the above makes sense, we'd be happy to make a pull request for this.

Thanks