Description of problem:
Gluster deployment wizard fails on "Check if provided hostnames are valid"

Version-Release number of selected component (if applicable):
ovirt-node-ng-4.4.0-0.20200109.0

How reproducible:
Same result when running wizard on any of the three nodes.

Steps to Reproduce:
1. Set up 3 oVirt nodes
2. Set up ssh-key on node 1 and copy to other nodes
3. Connect to admin console on node 1 and run hyperconverged deployment wizard

Actual results:
TASK [Check if provided hostnames are valid] ***********************************
task path: /usr/share/cockpit/ovirt-dashboard/ansible/hc_wizard.yml:29
fatal: [ovirt1.mylab]: FAILED! => {"msg": "The conditional check 'result.results[0]['stdout_lines'] > 0' failed. The error was: Unexpected templating type error occurred on ({% if result.results[0]['stdout_lines'] > 0 %} True {% else %} False {% endif %}): '>' not supported between instances of 'list' and 'int'"}
fatal: [ovirt3.mylab]: FAILED! => {"msg": "The conditional check 'result.results[0]['stdout_lines'] > 0' failed. The error was: Unexpected templating type error occurred on ({% if result.results[0]['stdout_lines'] > 0 %} True {% else %} False {% endif %}): '>' not supported between instances of 'list' and 'int'"}
fatal: [ovirt2.mylab]: FAILED! => {"msg": "The conditional check 'result.results[0]['stdout_lines'] > 0' failed. The error was: Unexpected templating type error occurred on ({% if result.results[0]['stdout_lines'] > 0 %} True {% else %} False {% endif %}): '>' not supported between instances of 'list' and 'int'"}

Expected results:
Hostnames are valid