Python packaging - Pip trusted host issues

For quite some time,I have not updated pip. Yesterday, when I updated pip using our local PyPI server to its latest version - 7.0.3 for python2.7, my simple attempt to install python packages failed. e.g. I was trying to install fuzzy module that deals with strings similarities.

root@psj-desktop:~# pip install fuzzy -i http://osrepo.xxx.in/pypi/simpleCollecting fuzzy
  The repository located at osrepo.xxx.in is not a trusted or secure host and is being ignored. If this repository is available via HTTPS it is recommended to use HTTPS instead, otherwise you may silence this warning and allow it anyways with '--trusted-host osrepo.xxx.in'.
  Could not find a version that satisfies the requirement fuzzy (from versions: )
No matching distribution found for fuzzy

root@psj-desktop:~# pip install --pre fuzzy -i http://osrepo.xxx.in/pypi/simple
Collecting fuzzy
  The repository located at osrepo.xxx.in is not a trusted or secure host and is being ignored. If this repository is available via HTTPS it is recommended to use HTTPS instead, otherwise you may silence this warning and allow it anyways with '--trusted-host osrepo.xxx.in'.
  Could not find a version that satisfies the requirement fuzzy (from versions: )
No matching distribution found for fuzzy

Things became clear after reading pip developer documentation - https://media.readthedocs.org/pdf/pip/develop/pip.pdf
Another place you should look for is changelog in github repository - https://github.com/pypa/pip/

It is possible to create pip.conf in a number of ways:

On Unix the default configuration file is: $HOME/.config/pip/pip.conf or you can create globally under /etc/pip.conf
On Windows the configuration file is : %APPDATA%\pip\pip.ini

Sample /etc/pip.conf
---------------------------------
[global]
index-url = http://osrepo.xxx.in/pypi/simple
trusted-host = osrepo.xxx.in
disable-pip-version-check = true
allow-all-external=true
timeout = 120