Bug 1307233

Description of problem:
on openshift online python-3.3 cartridge, pip can't find the latest version of python package altough it's available at pypi index.

Steps to Reproduce:
1. rhc app-create py33 python-3.3
2. cd py33
3. touch requirements.txt
4. echo requests==2.9.1 >> requirements.txt
5. git add .
6. git commit -a -m "requests2.9.1"
7. git push

Actual results:
Counting objects: 3, done.
Delta compression using up to 4 threads.
Compressing objects: 100% (2/2), done.
Writing objects: 100% (3/3), 274 bytes | 0 bytes/s, done.
Total 3 (delta 1), reused 0 (delta 0)
remote: Stopping Python 3.3 cartridge
remote: Waiting for stop to finish
remote: Waiting for stop to finish
remote: Building git ref 'master', commit b6b983c
remote: Activating virtenv
remote: Checking for pip dependency listed in requirements.txt file..
remote: The directory '/var/lib/openshift/56b712f40c1e668ab20001a3/.cache/pip/http' or its parent directory is not owned by the current user and the cache has been disabled. Please check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
remote: The directory '/var/lib/openshift/56b712f40c1e668ab20001a3/.cache/pip' or its parent directory is not owned by the current user and caching wheels has been disabled. check the permissions and owner of that directory. If executing pip with sudo, you may want sudo's -H flag.
remote: Collecting requests==2.9.1 (from -r /var/lib/openshift/56b712f40c1e668ab20001a3/app-root/runtime/repo/requirements.txt (line 1))
remote:   Could not find a version that satisfies the requirement requests==2.9.1 (from -r /var/lib/openshift/56b712f40c1e668ab20001a3/app-root/runtime/repo/requirements.txt (line 1)) (from versions: 0.2.0, 0.2.1, 0.2.2, 0.2.3, 0.2.4, 0.3.0, 0.3.1, 0.3.2, 0.3.3, 0.3.4, 0.4.0, 0.4.1, 0.5.0, 0.5.1, 0.6.0, 0.6.1, 0.6.2, 0.6.3, 0.6.4, 0.6.5, 0.6.6, 0.7.0, 0.7.1, 0.7.2, 0.7.3, 0.7.4, 0.7.5, 0.7.6, 0.8.0, 0.8.1, 0.8.2, 0.8.3, 0.8.4, 0.8.5, 0.8.6, 0.8.7, 0.8.8, 0.8.9, 0.9.0, 0.9.1, 0.9.2, 0.9.3, 0.10.0, 0.10.1, 0.10.2, 0.10.3, 0.10.4, 0.10.6, 0.10.7, 0.10.8, 0.11.1, 0.11.2, 0.12.0, 0.12.1, 0.13.0, 0.13.1, 0.13.2, 0.13.3, 0.13.4, 0.13.5, 0.13.6, 0.13.7, 0.13.8, 0.13.9, 0.14.0, 0.14.1, 0.14.2, 1.0.0, 1.0.1, 1.0.2, 1.0.3, 1.0.4, 1.1.0, 1.2.0, 1.2.1, 1.2.2, 1.2.3, 2.0.0, 2.0.1, 2.1.0, 2.2.0, 2.2.1, 2.3.0, 2.4.0, 2.4.1, 2.4.2, 2.4.3, 2.5.0, 2.5.1, 2.5.2, 2.5.3, 2.6.0, 2.6.1, 2.6.2, 2.7.0, 2.8.0, 2.8.1)
remote: No matching distribution found for requests==2.9.1 (from -r /var/lib/openshift/56b712f40c1e668ab20001a3/app-root/runtime/repo/requirements.txt (line 1))
remote: Running setup.py script..
remote: running develop
remote: running egg_info
remote: creating YourAppName.egg-info
remote: writing YourAppName.egg-info/PKG-INFO
remote: writing dependency_links to YourAppName.egg-info/dependency_links.txt
remote: writing top-level names to YourAppName.egg-info/top_level.txt
remote: writing manifest file 'YourAppName.egg-info/SOURCES.txt'
remote: reading manifest file 'YourAppName.egg-info/SOURCES.txt'
remote: writing manifest file 'YourAppName.egg-info/SOURCES.txt'
remote: running build_ext
remote: Creating /var/lib/openshift/56b712f40c1e668ab20001a3/app-root/runtime/dependencies/python/virtenv/venv/lib/python3.3/site-packages/YourAppName.egg-link (link to .)
remote: Adding YourAppName 1.0 to easy-install.pth file
remote:
remote: Installed /var/lib/openshift/56b712f40c1e668ab20001a3/app-root/runtime/repo
remote: Processing dependencies for YourAppName==1.0
remote: Finished processing dependencies for YourAppName==1.0
remote: Preparing build for deployment
remote: Deployment id is 19c7fb7b
remote: Activating deployment
remote: Starting Python 3.3 cartridge (Apache+mod_wsgi)
remote: Application directory "/" selected as DocumentRoot
remote: Application "wsgi.py" selected as default WSGI entry point
remote: -------------------------
remote: Git Post-Receive Result: success
remote: Activation status: success
remote: Deployment completed with status: success
To ssh://56b712f40c1e668ab20001a3.com/~/git/py33.git/
   be50ea8..b6b983c  master -> master

Expected results:
pip should find the latest version from pypi index and install it.

Additional info:
you can add latest version of almost any python package and reproduce this error.

Temporary fix:
I'm using two lines of commands in deploy action hook as a temporary fix for this problem.

echo "installing dependencies..."
pip install -r "$OPENSHIFT_REPO_DIR"requirements.txt