pip 7.1.0 reports wrong version is installed when upgrading to 7.1.1

[jayvdb]

$ pip install --user --upgrade pip
/usr/local/lib/python2.7/site-packages/pip/_vendor/requests/packages/urllib3/util/ssl_.py:90: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. For more information, see https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning.
  InsecurePlatformWarning
You are using pip version 7.1.0, however version 7.1.1 is available.
You should consider upgrading via the 'pip install --upgrade pip' command.
/usr/local/lib/python2.7/site-packages/pip/_vendor/requests/packages/urllib3/util/ssl_.py:90: InsecurePlatformWarning: A true SSLContext object is not available. This prevents urllib3 from configuring SSL appropriately and may cause certain SSL connections to fail. For more information, see https://urllib3.readthedocs.org/en/latest/security.html#insecureplatformwarning.
  InsecurePlatformWarning
Collecting pip
  Downloading pip-7.1.1-py2.py3-none-any.whl (1.1MB)
    100% |████████████████████████████████| 1.1MB 72kB/s 
Installing collected packages: pip
Successfully installed pip-7.1.0
$ pip --version
pip 7.1.1 from [~]/.local/lib/python2.7/site-packages (python 2.7)

Sorry if this has already been report/fixed in 7.1.1

[xavfernandez]

Certainly linked to #2382

[xavfernandez]

Closing in favor of #2382 and #3709