[RHV] Self Hosted Engine is failing to start

Issue

• HostedEngine will not start

• The ovirt-ha-agent is failing to start

  MainThread::ERROR::2021-07-24 16:26:25,651::agent::144::ovirt_hosted_engine_ha.agent.agent.Agent::(_run_agent) Traceback (most recent call last):
    File "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/agent/agent.py", line 131, in _run_agent
      return action(he)
    File "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/agent/agent.py", line 55, in action_proper
      return he.start_monitoring()
    File "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/agent/hosted_engine.py", line 432, in start_monitoring
      self._initialize_broker()
    File "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/agent/hosted_engine.py", line 556, in _initialize_broker
      m.get('options', {}))
    File "/usr/lib/python2.7/site-packages/ovirt_hosted_engine_ha/lib/brokerlink.py", line 89, in start_monitor
      ).format(t=type, o=options, e=e)
  RequestError: brokerlink - failed to start monitor via ovirt-ha-broker: [Errno 2] No such file or directory, [monitor: 'network', options: {'tcp_t_address': '', 'network_test': 'dns', 'tcp_t_port': '', 'addr': '192.255.25.225'}]
  MainThread::ERROR::2021-07-24 16:26:25,651::agent::145::ovirt_hosted_engine_ha.agent.agent.Agent::(_run_agent) Trying to restart agent