Cloned from https://bugzilla.redhat.com/show_bug.cgi?id=1788127

Description of problem:

The operating system is set to blank on the host when selecting hostgroup before the Location when a host is created on the Foreman.

Version-Release number of selected component (if applicable):
2.0

How reproducible:

Create a host using a hostgroup with any location set on the Foreman, select the hostgroup and after that select the location, the Operating system will be blank on the Operating system tab.

Steps to Reproduce:
1. Select Any Location on the Foreman WebUI.
2. Create a host using a hostgroup.
3. Select the Location.
4. Check the Operating system on the Operating system tab.

Actual results:
The host is created, however, if you need to change the Operating system version, neither Operating system is available to change.

Expected results:
The Operating system versions are loaded on the Operating system list.

Additional info: