Hi Gianluca,

this looks like an issue in the module. 

I have created PR which should fix the problem [1].

Please check it out. You can manually create an ansible library to which 

you would copy the module and add the fix there or wait till it is added to ansible 2.9.

Further issues/requests recommend to create on the repo.

[1] https://github.com/oVirt/ovirt-ansible-collection/pull/61

Martin Necas