Foreman » Installer

Cloned from https://bugzilla.redhat.com/show_bug.cgi?id=1039108
Description of problem:

If doing a node-install the satellite cannot connect to the node either because of firewall or networking issues, the node install will fail but will give no indication of why.

How reproducible:
always

Steps to Reproduce:
1. Install a satellite server
2. Attempt to install a node with the firewall still running

Actual results:

Node install fails with an unhelpful error:

/Stage[main]/Foreman_proxy::Register/Foreman_smartproxy[smart.proxy.example.com]/ensure: change from absent to 
 present failed: Could not set 'present on ensure: 422 Unprocessable Entity at                                 
 /usr/share/node-installer/modules/foreman_proxy/manifests/register.pp:12

Expected results:
Should show some type of error that would help the user understand what is wrong

Additional info:

Errors seen in /var/log/foreman/production.log:

Unprocessable entity SmartProxy (id: new):
Unable to communicate with the proxy: No route to host - connect(2)
Please check the proxy is configured and running on the host.