Insights fails to register during provisioning with UnicodeEncodeError: 'ascii' codec can't encode character '\ufffd' in position 94: ordinal not in range(128)

Issue

• Insights fails to register during provisioning (in %postsection of the kickstart profile):

# insights-client --register --verbose 

--- Logging error ---
Traceback (most recent call last):
  File "/usr/lib64/python3.6/logging/__init__.py", line 996, in emit
    stream.write(msg)
UnicodeEncodeError: 'ascii' codec can't encode character '\ufffd' in position 94: ordinal not in range(128)
Call stack:
  File "/usr/lib/python3.6/site-packages/insights_client/run.py", line 18, in <module>
    sys.exit(phase())
  File "/etc/insights-client/rpm.egg/insights/client/phase/v1.py", line 32, in _f
    func(client, config)
  File "/etc/insights-client/rpm.egg/insights/client/phase/v1.py", line 129, in update
    client.update()
  File "/etc/insights-client/rpm.egg/insights/client/__init__.py", line 258, in update
    egg_paths = self.fetch()
  File "/etc/insights-client/rpm.egg/insights/client/__init__.py", line 157, in fetch
    force)
  File "/etc/insights-client/rpm.egg/insights/client/__init__.py", line 72, in _init_connection
    return func(self, *args, **kwargs)
  File "/etc/insights-client/rpm.egg/insights/client/__init__.py", line 208, in _fetch
    response = self.connection.get(url)
  File "/etc/insights-client/rpm.egg/insights/client/connection.py", line 195, in get
    return self._http_request(url, 'GET', **kwargs)
  File "/etc/insights-client/rpm.egg/insights/client/connection.py", line 191, in _http_request
    logger.log(NETWORK, "HTTP Response Text: %s", res.text)
Message: 'HTTP Response Text: %s'