Updating tests

Updated specs Puppetfile with a more up to date Boxen and module-data since we are using that now and added some hiera data.

Symlinked Python module to spec fixtures needed for testing.

Updated spec for python class.

Updated Gemfile.lock file with updated gems.
python::global update

Update python::global to us the correct pyenv root.

Use 2.7.8 as the default global version.

Renamed spec file
Add test for python::alias
Updated tests for python::version

Updated spec for python::version so that it passes.
Added tests to verify support for hiera data works.

Added ensure => absent support. Updated $dest with correct destination.
Add test for python::pyenv