* Restructure the role to move logic out of main tasks file.
* Use /usr/local as default prefix for python commands
as expected by DevStack
* Use 4 cores in Vagrant to compile python faster
Change-Id: I87024f4397649000d168a444ba091fef9671f8bd
The purpose of this is to be able to install a version
of python that is not available on target node. It
downloads source code from Python site, compiles it
using default compiler and install it.
It also installs and upgrade python packages (pip,
setuptools, etc.) and install additional ones required
by user via Pip
Change-Id: I3212d6fc1872451942aaa82e613236351f8592a3
