Latest pycassa requires newer setuptools.
Trying pip instead of easy_install.
Switched to pip install --upgrade.
Wrapper around pip to be more persistent.
Makes sure we pick all egg options.
Removed yes command.
Write 100 times: don't substited all occurencese without checking.
Changed exit point from pip_wrapper.
Use pip wrapper also for Celery.
Make sure return code is 0 if we are successful.
Make sure bootstrap fails if any command fails.
Stop if pip_wrapper is called with no argument.
Added explicit test fo unit tests (easier to read output).
Fixed typoes.
Merge pull request #1535 from obino/fix-pycassa-deps

Fix pycassa deps