Cloned from https://bugzilla.redhat.com/show_bug.cgi?id=1705097

Description of problem:
When you generate a report template, it doesn't show any CSV headers (name, label, severity, etc...) on the top of the file if no results are found. This is just a blank file and is confusing as it makes one think the file wasn't generated correctly, also it may break automation that users build around this.

We should keep the headers on the file even if its blank

Version-Release number of selected component (if applicable):
6.5.0

How reproducible:
Always

Steps to Reproduce:
1.Navigate to Report Templates
2.Click "Generate" for applicable errata and search with a host that has no errata applicable (name = myhost).
3.view blank report

Actual results:
report is blank

Expected results:
report has headers

Additional info: