Helm provider 1.1.1 and repository_config_path option not used?

From docs, repository_config_path can be used to set the path to the file containing repository names and URLs. When adding a repo to helm you can set a user/pass for the repo. Does the option above not use the user/pass specified in the repositories.yaml? Currently getting a 401 on plan when trying to fetch a chart from a repo that requires credentials.