Description of problem:
Failed to generate the mapping file for DR flow(active-passive) on the ovirt-engine as the master site.
# ./ovirt-dr generate
Traceback (most recent call last):
  File "./ovirt-dr", line 15, in <module>
    import fail_back
  File "/usr/share/ansible/collections/ansible_collections/redhat/rhv/roles/disaster_recovery/files/fail_back.py", line 14, in <module>
    from ansible.module_utils.six.moves import input
ModuleNotFoundError: No module named 'ansible'


Version-Release number of selected component (if applicable):
ovirt-engine-4.5.0.7-0.9.el8ev.noarch
ansible-core-2.12.2-3.1.el8.x86_64

# rpm -qa | grep ansible
ansible-core-2.12.2-3.1.el8.x86_64
python38-ansible-runner-2.1.3-1.el8ev.noarch
ansible-collection-ansible-utils-2.3.0-2.2.el8ev.noarch
ansible-collection-ansible-posix-1.3.0-1.2.el8ev.noarch
ansible-runner-2.1.3-1.el8ev.noarch
ansible-collection-ansible-netcommon-2.2.0-3.2.el8ev.noarch
ovirt-ansible-collection-2.0.3-1.el8ev.noarch


How reproducible:
100%

Steps to Reproduce:
1. Go to /usr/share/ansible/collections/ansible_collections/ovirt/ovirt/roles/disaster_recovery/files/
2. After setting the dr.conf file to the DR's environment information, generate the mapping file: "./ovirt-dr generate"


Actual results:
The file is not generated due to import failure in fail_back.py line 14: ModuleNotFoundError: No module named 'ansible'

Expected results:
The script should succeed to generate the mapping file mapping_vars.yml without any errors


Additional info:
Worked in ovirt-engine 4.4