Create NATS user under an application account
iofogctl nats users create APP_NAME USER_NAME [flags] --expires-in int Expiry in seconds
-h, --help help for create
--nats-rule string NATS user rule name
--output string Output format: yaml|json|wide (default "yaml") --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