Fetch NATS creds
iofogctl nats users creds APP_NAME USER_NAME [flags] -h, --help help for creds
-o, --output-file string Destination creds file path (always overwritten) --debug Toggle for displaying verbose output of API clients (HTTP and SSH)
-n, --namespace string Namespace to execute respective command within (default "default")
-v, --verbose Toggle for displaying verbose output of iofogctl