provider/azure/azure_discover.go
func argsOrEnv(args map[string]string, key, env string) string {
  if value, ok := args[key]; ok {
    return value
  }
  return os.Getenv(env)
}
func argsOrEnv(args map[string]string, key, env string) string {
  if value, ok := args[key]; ok {
    return value
  }
  return os.Getenv(env)
}
// argsOrEnv allows you to pick an environmental variable for a setting if the arg is not set