Issue

• Unable to communicate with vCenters after upgrading virt-who package to virt-who-0.21.5-1.el7.noarch from RHEL 7.5 base repository.
• virt-who fails with following error,

2018-04-16 12:04:34,652 [virtwho.main ERROR] MainProcess(53523):Thread-2 @virt.py:run:388 - Thread 'virt-config' fails with exception:
Traceback (most recent call last):
  File "/usr/lib/python2.7/site-packages/virtwho/virt/virt.py", line 379, in run
    self._run()
  File "/usr/lib/python2.7/site-packages/virtwho/virt/esx/esx.py", line 215, in _run
    assoc = self.getHostGuestMapping()
  File "/usr/lib/python2.7/site-packages/virtwho/virt/esx/esx.py", line 262, in getHostGuestMapping
    uuid = host['config.network.dnsConfig.hostName']
KeyError: 'config.network.dnsConfig.hostName'
2018-04-16 12:04:34,652 [virtwho.main INFO] MainProcess(53523):Thread-2 @virt.py:_send_data:922 - Report for config "virt-config" gathered, placing in datastore