Registering system to Red Hat Insights fails with error "ImportError: cannot import name ProtocolError"

Issue

• While registering system to Red Hat Insights fails with error ImportError: cannot import name ProtocolError
• Command redhat-access-insights --register fails with below traceback error

Traceback (most recent call last):
  File "/usr/bin/redhat-access-insights", line 9, in <module>
    load_entry_point('redhat-access-insights==1.0.8', 'console_scripts', 'redhat-access-insights')()
  File "/usr/lib/python2.6/site-packages/pkg_resources.py", line 299, in load_entry_point
    return get_distribution(dist).load_entry_point(group, name)
  File "/usr/lib/python2.6/site-packages/pkg_resources.py", line 2229, in load_entry_point
    return ep.load()
  File "/usr/lib/python2.6/site-packages/pkg_resources.py", line 1948, in load
    entry = __import__(self.module_name, globals(),globals(), ['__name__'])
  File "/usr/lib/python2.6/site-packages/redhat_access_insights/__init__.py", line 14, in <module>
    import requests
  File "/usr/lib/python2.6/site-packages/requests/__init__.py", line 59, in <module>
    from .models import Request, Response, PreparedRequest
  File "/usr/lib/python2.6/site-packages/requests/models.py", line 22, in <module>
    from .packages.urllib3.exceptions import (
ImportError: cannot import name ProtocolError