textual output small fix

[adisos]

list output does not end with \n ... please check additional commands output, and add newline for all textual output.
example:

<prompt>$ ./bin/k8snetpolicy list --dirpath tests/acs-security-demos
backend/checkout[Deployment] => backend/notification[Deployment] : TCP 8080
backend/checkout[Deployment] => backend/recommendation[Deployment] : TCP 8080
backend/checkout[Deployment] => payments/gateway[Deployment] : TCP 8080
backend/recommendation[Deployment] => backend/catalog[Deployment] : TCP 8080
backend/reports[Deployment] => backend/catalog[Deployment] : TCP 8080
backend/reports[Deployment] => backend/recommendation[Deployment] : TCP 8080
frontend/webapp[Deployment] => backend/checkout[Deployment] : TCP 8080
frontend/webapp[Deployment] => backend/recommendation[Deployment] : TCP 8080
frontend/webapp[Deployment] => backend/reports[Deployment] : TCP 8080
frontend/webapp[Deployment] => backend/shipping[Deployment] : TCP 8080
payments/gateway[Deployment] => payments/mastercard-processor[Deployment] : TCP 8080
payments/gateway[Deployment] => payments/visa-processor[Deployment] : TCP 8080
{ingress-controller} => frontend/asset-cache[Deployment] : TCP 8080
{ingress-controller} => frontend/webapp[Deployment] : TCP 8080<prompt>$

last lines should be instead:

{ingress-controller} => frontend/webapp[Deployment] : TCP 8080
<prompt>$