Bug 1809470

+++ This bug is a downstream clone. The original bug is: +++
+++   bug 1806276 +++
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Description of problem
======================
ovirt-provider-ovn is not functional on 4.3.9 Hosted-Engine.
There is no option of connecting RHV to the provider, creating OVN networks, etc.

Version-Release number of selected component (if applicable)
============================================================
ovirt-engine-4.3.9.0-0.1.el7.noarch
rhvm-appliance-4.3-20200204.0.el7
openvswitch2.11-2.11.0-9.el7fdp.x86_64

How reproducible
================
100%

Steps to Reproduce
==================
1. Deploy Hosted-Engine using [1], [2] on a bare metal.
2. Create a cluster with ovirt-provider-ovn as an external network provider
3. Go to 'Providers' tab in webadmin UI - edit the ovirt-provider-ovn - click 'test'

[1] - rhvm-appliance-4.3-20200204.0.el7
[2] - ovirt-engine-setup-4.3.9.0-0.1.el7.noarch

Actual results
==============
A red box appears with the text: 'Failed to communicate with the external provider, see log for additional details.'

Expected results
================
A green box appears with the text: 'Test succeeded, managed to access provider.'

Additional info
===============
- In step 1 the deafult answer file was used. this issue reproduced on a manual deploy using cli.

- The output for `# systemctl status ovn-controller.service` shows the following error: ovs|00025|stream_ssl|ERR|ssl:10.35.128.44:6642: connect: Network is unreachable

- No Geneve tunnel is created on the host installed in a cluster with ovirt-provider-ovn configured as the external network provider

- Naturally, the output for `ovn-sbctl show` on the Engine VM shows no Chassis

(Originally by Moshe Sheena)