Issue

• Clients are facing errors while attempting to deploy with the requirements.txt via a git push. One of the typical error was:

remote: Activating virtenv
remote: Checking for pip dependency listed in requirements.txt file..
remote: Requirement already satisfied (use --upgrade to upgrade): Django==1.6.5 in /var/lib/openshift/GEAR_UUID/app-root/runtime/dependencies/python/virtenv/lib/python2.7/site-packages \
(from -r /var/lib/openshift/GEAR_UUID/app-root/runtime/repo/requirements.txt (line 1))
remote: Downloading/unpacking cffi==0.8.2 (from -r /var/lib/openshift/GEAR_UUID/app-root/runtime/repo/requirements.txt (line 3))
remote:   Running setup.py egg_info for package cffi
remote:     Package libffi was not found in the pkg-config search path.
remote:     Perhaps you should add the directory containing `libffi.pc'
remote:     to the PKG_CONFIG_PATH environment variable
remote:     No package 'libffi' found