Cloned from https://bugzilla.redhat.com/show_bug.cgi?id=1337483
Description of problem:
Link in graph on capsule -> Puppet page have "undefined" as smart proxy name

Version-Release number of selected component (if applicable):
satellite-6.2.0-12.0.el7sat.noarch

How reproducible:
always

Steps to Reproduce:
1. Have Sat and Capsule with some hosts registered against Capsule
2. Go to Infrastucture -> Capsules -> <capsule> -> Puppet -> General -> Host Configuration Chart
3. Click on some segment of that pie/round graph

Actual results:
You are taken to https://&lt;fqdn&gt;/smart_proxies/undefined which does not exist

Expected results:
There should be no link or there should be a valid one