Description of problem:
Embedded ansible repository cannot be edited if "Enter" key has been pressed.

Version-Release number of selected component (if applicable):
5.8.0.15.20170517161141_119e6fd

How reproducible:
Always

Steps to Reproduce:
1. Enable Embedded Ansible role.
2. Wait until it will be enabled.
3. Navigate to Automation/Ansible/Repositories.
4. Add some repository.
5. Open editing screen of that repo, change some field.
6. Press "Enter".

Actual results:
Repository cannot be saved. An error occured:
"Resource id or href should not be specified for creating a new configuration_script_sources"

Expected results:
Repository should be saved by "Enter" key pressing.