Registering a system to Red Hat Insights fails with error pkg_resources.DistributionNotFound: urllib3>=1.21.1,<1.23

Issue

• While trying to register a system to Red Hat Insights it fails with below traceback error:

  Traceback (most recent call last):
    File "/bin/insights-client", line 5, in <module>
      from pkg_resources import load_entry_point
    File "/usr/lib/python2.7/site-packages/pkg_resources.py", line 3011, in <module>
      parse_requirements(__requires__), Environment()
    File "/usr/lib/python2.7/site-packages/pkg_resources.py", line 626, in resolve
      raise DistributionNotFound(req)
  pkg_resources.DistributionNotFound: urllib3>=1.21.1,<1.23
  

  OR

  Traceback (most recent call last):
    File "/bin/insights-client", line 9, in <module>
      load_entry_point('insights-client==3.0.3', 'console_scripts', 'insights-client')()
    File "/usr/lib/python2.7/site-packages/insights_client/__init__.py", line 135, in _main
      from insights.client import InsightsClient
    File "/etc/insights-client/rpm.egg/insights/client/__init__.py", line 10, in <module>
    File "/etc/insights-client/rpm.egg/insights/client/client.py", line 9, in <module>
    File "/etc/insights-client/rpm.egg/insights/client/auto_config.py", line 6, in <module>
    File "/usr/lib/python2.7/site-packages/requests/__init__.py", line 58, in <module>
      from . import utils
    File "/usr/lib/python2.7/site-packages/requests/utils.py", line 32, in <module>
      from .exceptions import InvalidURL
    File "/usr/lib/python2.7/site-packages/requests/exceptions.py", line 10, in <module>
      from .packages.urllib3.exceptions import HTTPError as BaseHTTPError
    File "/usr/lib/python2.7/site-packages/requests/packages/__init__.py", line 95, in load_module
      raise ImportError("No module named '%s'" % (name,))
  ImportError: No module named 'requests.packages.urllib3'