After doing same steps on this container I get now this kind of error at the end while using apparently the correct virtualenv:

    2.429 INFO     Updating inventory 4: MYDC_OVIRT
    3.257 DEBUG    Using base command: python /opt/my-envs/ovirt/bin/ansible-inventory -i /var/lib/awx/venv/awx/lib64/python3.6/site-packages/awx/plugins/inventory/ovirt4.py --playbook-dir /var/lib/awx/venv/awx/lib64/python3.6/site-packages/awx/plugins/inventory -vvvvv
    3.257 INFO     Reading Ansible inventory source: /var/lib/awx/venv/awx/lib64/python3.6/site-packages/awx/plugins/inventory/ovirt4.py
    3.259 INFO     Using VIRTUAL_ENV: /opt/my-envs/ovirt/
    3.260 INFO     Using PATH: /opt/my-envs/ovirt/bin:/var/lib/awx/venv/awx/bin:/var/lib/awx/venv/awx/bin:/var/lib/awx/venv/awx/bin:/usr/local/sbin:/usr/local/bin:/usr/sbin:/usr/bin:/sbin:/bin
    3.260 INFO     Using PYTHONPATH: /opt/my-envs/ovirt/lib/python2.7/site-packages:
Traceback (most recent call last):
  File "/var/lib/awx/venv/awx/bin/awx-manage", line 11, in <module>
    load_entry_point('awx==9.0.1.0', 'console_scripts', 'awx-manage')()
  File "/var/lib/awx/venv/awx/lib64/python3.6/site-packages/awx/__init__.py", line 158, in manage
    execute_from_command_line(sys.argv)
  File "/var/lib/awx/venv/awx/lib64/python3.6/site-packages/django/core/management/__init__.py", line 381, in execute_from_command_line
    utility.execute()
  File "/var/lib/awx/venv/awx/lib64/python3.6/site-packages/django/core/management/__init__.py", line 375, in execute
    self.fetch_command(subcommand).run_from_argv(self.argv)
  File "/var/lib/awx/venv/awx/lib64/python3.6/site-packages/django/core/management/base.py", line 323, in run_from_argv
    self.execute(*args, **cmd_options)
  File "/var/lib/awx/venv/awx/lib64/python3.6/site-packages/django/core/management/base.py", line 364, in execute
    output = self.handle(*args, **options)
  File "/var/lib/awx/venv/awx/lib64/python3.6/site-packages/awx/main/management/commands/inventory_import.py", line 1153, in handle
    raise exc
  File "/var/lib/awx/venv/awx/lib64/python3.6/site-packages/awx/main/management/commands/inventory_import.py", line 1043, in handle
    venv_path=venv_path, verbosity=self.verbosity).load()
  File "/var/lib/awx/venv/awx/lib64/python3.6/site-packages/awx/main/management/commands/inventory_import.py", line 214, in load
    return self.command_to_json(base_args + ['--list'])
  File "/var/lib/awx/venv/awx/lib64/python3.6/site-packages/awx/main/management/commands/inventory_import.py", line 197, in command_to_json
    self.method, proc.returncode, stdout, stderr))
RuntimeError: ansible-inventory failed (rc=1) with stdout:
stderr:
ansible-inventory 2.9.2
  config file = /etc/ansible/ansible.cfg
  configured module search path = [u'/var/lib/awx/.ansible/plugins/modules', u'/usr/share/ansible/plugins/modules']
  ansible python module location = /opt/my-envs/ovirt/lib/python2.7/site-packages/ansible
  executable location = /opt/my-envs/ovirt/bin/ansible-inventory
  python version = 2.7.15 (default, Oct  8 2019, 21:08:29) [GCC 8.2.1 20180905 (Red Hat 8.2.1-3)]
Using /etc/ansible/ansible.cfg as config file
setting up inventory plugins
[WARNING]:  * Failed to parse /var/lib/awx/venv/awx/lib64/python3.6/site-
packages/awx/plugins/inventory/ovirt4.py with script plugin: Inventory script
(/var/lib/awx/venv/awx/lib64/python3.6/site-
packages/awx/plugins/inventory/ovirt4.py) had an execution error:

  File "/opt/my-envs/ovirt/lib/python2.7/site-packages/ansible/inventory/manager.py", line 280, in parse_source
    plugin.parse(self._inventory, self._loader, source, cache=cache)
  File "/opt/my-envs/ovirt/lib/python2.7/site-packages/ansible/plugins/inventory/script.py", line 161, in parse
    raise AnsibleParserError(to_native(e))

[WARNING]: Unable to parse /var/lib/awx/venv/awx/lib64/python3.6/site-
packages/awx/plugins/inventory/ovirt4.py as an inventory source

ERROR! No inventory was parsed, please check your configuration and options.

Ideas?