Adding numpy for python 3

[wmszeliga]

In trying to recompile the python roll with numpy for python3.6 I've run into some problems. First, it seems as though I need setuptools for python3.6. There is a comment in commit 2898be8 that suggests that setuptools is included in python3.6. This doesn't seem to be the case (or I'm being silly).

I attempted to remedy this by also adding setuptools-3 to the python build, but that leads to a naming clash (for easy_install among other things) when running bootstrap.sh in the python build. Any ideas on how to move forward?

Incidentally, the commit 2cffe94 also states that pip is part of python3.6. It seems that this version of pip must be getting clobbered on a fresh Rocks 7 install since I don't see a /opt/python/bin/pip-3.6 and /opt/python/bin/pip is for python version 2.7.