Network error not rescued

[wiad]

For some of my hosts the rescue part in ping_cockpit_service in app/models/concerns/foreman_cockpit/host_extensions.rb did not catch an error ('network unreachable') which leads to Foreman displaying an error message instead of just skipping the cockpit display on that host.

I had to add the error Errno::ENETUNREACH to the rescue list to make it work.