Description of problem:
When changing the order of Ansible roles assigned to a host group, the changes appear to revert after they have been submitted.

Version-Release number of selected component (if applicable):
Satellite 6.10.0, snap 6
tfm-rubygem-foreman_ansible-6.3.0-1.el7sat.noarch

How reproducible:
100%

Steps to Reproduce:
1. Import multiple Ansible roles to Satellite.
2. Create a host group, assign multiple roles on the Ansible tab, then click Submit.
3. Click the name of the host group again and go to the Ansible tab. Change the order of the roles again and click Submit.
4. Click the name of the host group again and go to the Ansible tab. 

Actual results:
The roles appear in the original order, as if the previous change had not been made.

Expected results:
Changes in the order are persistent in the webUI. 

Additional info:
- This behavior is not present when assigning roles to an individual host, only when assigning roles to a host group.
- Though changes do not appear persistent in the webUI, when the roles are run against any hosts in the host group, the last-submitted order seems to be consistently respected.