A ping fallback would be handy

Add a ping fallback

ping action is handled by OPSI module for OPSI clients and Argonaut module for argonaut clients. But when there is neither Argonaut nor OPSI client there should be a module using the usual ping to test if the system is answering or not.

Actual behavior

ping is only supported for OPSI and Argonaut

Expected behavior

There should be a fallback on standard ping on IP address.