func containsEmpty(vals []string) bool {
	for _, val := range vals {
		if val == "" {
			return true
		}
	}
	return false
}
func containsEmpty(vals []string) bool {
	for _, val := range vals {
		if val == "" {
			return true
		}
	}
	return false
}
// containsEmpty is a helper function used for validation (particularly for
// validating that creds arguments aren't empty