Description of problem:
There is no any active services when Ansible Playbook catalog item was ordered via custom button despite of it finished successfully.

Version-Release number of selected component (if applicable):
5.8.1.0.20170623170756_3ed4411

How reproducible:
Always

Steps to Reproduce:
1. Enable Embedded Ansible role.
2. Wait until it will be enabled.
3. Add some repository with ansible playbook.
4. Add some ansible credentials.
5. Navigate to Services/Catalogs/Catalog Items.
6. Create ansible catalog item.
7. Navigate to Automation/Automate/Customization/Buttons.
8. Create a "VM and Instance" Custom Button pointing to an Ansible Playbook Service Dialog.
9. In the Object Details Section set the System/Process/Request set request to "Order_Ansible_Playbook".
10. In the Attribute/Value Pairs section for the button set the "service_template_name" to Catalog Item name which was created in step 6. For the "hosts" set "vmdb_object".
11. Navigate to some VM and press the button.
12. In the service dialog pick credential for that VM.
13. Wait until request status will be finished successfully.
14. Navigate to Services/My services

Actual results:
Active services screen is empty. There is no the ordered service.

Expected results:
The ordered service should appear in active services.